1. Data set PGA.csv contains statistics of performance and winnings for 196 PGA tour participants during 2004 season [https://www.pgatour.com/]. Here is the list of variable: Name, Age, Average Drive (Yards), Driving accuracy (percent), Greens on regulation (%), Average # of putts, Save Percent, Money Rank, # Events, Total Winnings ($), Average winnings ($). Please read PGA data (PGA.csv) into R.
PGA <- read.csv("C:/Users/bhuvi iyer/Downloads/PGA.csv",h=T)
PGA
##                  Name Age AverageDrive DrivingAccuracy GreensonRegulation
## 1      Aaron Baddeley  23        288.0            53.1               58.2
## 2          Adam Scott  24        295.4            57.7               65.6
## 3          Alex Cejka  34        285.8            64.2               63.8
## 4         Andre Stolz  34        297.9            59.0               63.0
## 5         Arjun Atwal  31        289.4            60.5               62.5
## 6    Arron Oberholser  29        284.6            68.8               67.0
## 7         Bart Bryant  42        282.1            74.2               68.9
## 8           Ben Crane  28        283.8            64.4               64.2
## 9          Ben Curtis  27        282.1            64.3               63.4
## 10    Bernhard Langer  47        282.2            62.6               65.3
## 11      Billy Andrade  40        283.5            59.7               64.4
## 12      Billy Mayfair  38        285.2            70.1               66.0
## 13  Blaine McCalliste  46        280.9            63.4               63.6
## 14        Bo Van Pelt  29        294.4            65.1               67.7
## 15          Bob Burns  36        276.1            67.2               62.3
## 16          Bob Estes  38        278.2            63.9               64.2
## 17           Bob Tway  45        278.2            63.7               64.8
## 18         Brad Faxon  43        273.7            61.6               61.4
## 19     Brenden Pappas  34        298.9            50.1               63.0
## 20    Brent Geiberger  36        291.3            64.8               64.9
## 21      Brett Quigley  35        294.3            57.2               65.8
## 22      Brian Bateman  31        292.2            66.1               66.6
## 23          Brian Gay  33        279.7            64.8               61.5
## 24       Brian Kortan  33        292.4            63.0               62.0
## 25        Briny Baird  32        289.4            65.0               70.6
## 26    Cameron Beckman  34        291.2            66.5               67.0
## 27    Carl Pettersson  27        290.8            61.1               64.5
## 28      Carlos Franco  39        290.6            59.3               67.8
## 29      Chad Campbell  30        288.0            63.9               67.7
## 30  Charles Howell II  25        288.5            64.3               66.1
## 31        Chris Couch  31        302.1            56.2               60.8
## 32      Chris DiMarco  36        277.3            68.6               67.1
## 33        Chris Riley  31        277.3            61.8               62.5
## 34        Chris Smith  35        304.0            59.5               70.4
## 35       Cliff Kresge  36        283.4            62.8               60.5
## 36        Corey Pavin  45        268.2            71.9               62.1
## 37       Craig Barlow  32        291.0            67.8               67.7
## 38       Craig Bowden  36        270.8            76.1               62.9
## 39        Craig Parry  38        276.9            63.5               60.7
## 40        Craig Perks  37        289.4            54.4               63.0
## 41       D.J. Brigman  28        290.7            63.9               65.8
## 42        Dan Forsman  46        281.9            64.3               63.1
## 43          Dan Olsen  37        296.0            51.5               60.7
## 44      Daniel Chopra  30        295.9            58.6               63.9
## 45       Danny Briggs  44        283.8            65.5               68.1
## 46        Danny Ellis  34        286.7            62.9               63.9
## 47      Darren Clarke  36        289.0            62.3               64.0
## 48     David Branshaw  35        285.8            66.6               66.2
## 49        David Frost  45        273.6            66.1               63.7
## 50      David Gossett  25        283.8            54.4               54.7
## 51   David Morland IV  35        272.8            69.4               60.1
## 52      David Peoples  44        281.3            63.7               64.0
## 53         David Toms  37        285.3            63.4               68.5
## 54     Davis Love III  40        300.1            60.1               63.4
## 55        Dean Wilson  34        282.2            63.0               62.0
## 56       Deane Pappas  37        295.3            60.1               63.4
## 57     Dennis Paulson  42        300.1            60.4               63.0
## 58        Dicky Pride  35        280.5            68.3               62.6
## 59        Dudley Hart  36        285.6            63.1               64.2
## 60      Duffy Waldorf  42        285.4            68.6               69.0
## 61          Ernie Els  35        298.0            55.5               65.6
## 62     Esteban Toledo  42        275.2            67.8               60.1
## 63  Frank Lickliter I  35        287.3            66.6               64.8
## 64       Fred Couples  45        294.5            58.8               66.3
## 65          Fred Funk  48        271.9            77.2               65.5
## 66   Fredrik Jacobson  30        287.9            55.6               64.4
## 67        Gene Sauers  42        280.2            66.2               62.0
## 68       Geoff Ogilvy  27        303.3            63.2               66.9
## 69           Glen Day  39        286.1            65.6               61.8
## 70        Grant Waite  40        288.3            59.4               62.8
## 71      Greg Chalmers  31        287.3            61.7               60.6
## 72          Guy Boros  40        281.1            66.3               60.3
## 73        Hank Kuehne  29        314.4            49.9               62.9
## 74    Harrison Frazar  33        298.8            64.3               65.2
## 75       Heath Slocum  30        280.1            71.3               67.1
## 76   Hidemichi Tanaka  33        281.0            72.3               66.1
## 77    Hirofumi Miyase  33        279.7            70.6               60.4
## 78       Hunter Mahan  22        293.0            62.2               63.7
## 79         J.J. Henry  29        301.3            64.5               66.6
## 80         J.L. Lewis  44        288.3            65.5               65.8
## 81         J.P. Hayes  39        280.7            67.7               63.6
## 82         Jason Bohn  31        293.3            65.8               66.8
## 83       Jason Dufner  27        290.7            62.5               65.3
## 84        Jay Delsing  44        288.8            62.1               64.5
## 85           Jay Haas  51        274.5            65.4               66.9
## 86     Jay Williamson  37        288.1            69.3               65.4
## 87       Jeff Brehaut  41        290.9            71.3               66.2
## 88       Jeff Maggert  40        281.2            69.2               67.5
## 89        Jeff Sluman  47        279.6            67.9               68.8
## 90        Jerry Kelly  38        278.1            70.4               68.0
## 91    Jesper Parnevik  39        287.9            60.0               66.1
## 92         Joe Durant  40        287.2            75.1               73.3
## 93        Joe Ogilvie  30        288.8            61.3               62.5
## 94      Joey Sindelar  46        291.5            65.6               67.6
## 95          John Cook  47        270.2            73.4               66.5
## 96          John Daly  38        306.0            53.0               66.4
## 97        John Huston  43        286.4            65.9               68.8
## 98       John Riegger  41        285.0            61.4               67.1
## 99       John Rollins  29        286.7            69.1               62.5
## 100       John Senden  33        296.6            65.6               70.5
## 101     Jonathan Byrd  26        295.8            62.1               61.4
## 102     Jonathan Kaye  34        290.9            64.7               66.5
## 103      Jose Coceres  41        279.4            74.3               63.3
## 104 Jose Maria Olazab  38        277.7            57.0               62.5
## 105    Justin Leonard  32        282.9            67.4               66.1
## 106       Justin Rose  24        290.7            61.5               67.7
## 107         K.J. Choi  34        285.0            61.2               65.9
## 108          Ken Duke  35        284.3            59.0               61.9
## 109       Kenny Perry  44        295.9            62.5               68.6
## 110        Kent Jones  37        286.4            69.8               67.4
## 111    Kevin Muncrief  28        290.7            56.1               59.1
## 112          Kevin Na  21        280.1            68.7               63.4
## 113  Kevin Sutherland  40        286.1            67.1               63.0
## 114     Kirk Triplett  42        279.1            72.1               67.7
## 115          Kris Cox  31        299.1            59.0               62.0
## 116        Lee Janzen  40        286.1            62.2               67.8
## 117      Len Mattiace  37        278.0            67.2               59.1
## 118     Loren Roberts  49        269.1            69.8               66.6
## 119      Lucas Glover  25        303.4            64.4               67.5
## 120       Luke Donald  27        279.8            69.6               69.4
## 121       Mark Brooks  43        273.8            66.8               59.8
## 122 Mark Calcavecchia  44        291.3            64.5               64.1
## 123       Mark Hensby  33        284.6            67.7               63.3
## 124      Mark O'Meara  47        272.9            67.0               62.5
## 125       Mark Wilson  30        282.1            72.0               68.9
## 126  Mathias Gronberg  34        292.1            58.5               63.2
## 127        Matt Gogel  33        285.6            68.5               63.2
## 128       Matt Kuchar  26        287.3            64.4               65.3
## 129     Michael Allen  45        291.1            56.5               64.2
## 130       Mike Heinen  37        305.2            62.7               62.8
## 131         Mike Weir  34        282.1            64.1               65.1
## 132    Neal Lancaster  42        291.6            57.6               65.2
## 133        Nick Price  47        272.8            68.3               59.1
## 134      Niclas Fasth  32        289.1            61.6               61.5
## 135   Notah Begay III  32        285.8            69.5               66.2
## 136       Olin Browne  45        281.9            73.5               68.9
## 137       Omar Uresti  36        272.2            73.1               62.6
## 138         Pat Bates  35        275.5            69.9               66.3
## 139         Pat Perez  28        291.4            65.0               66.2
## 140   Patrick Sheehan  35        290.3            63.0               64.9
## 141      Paul Azinger  44        285.1            57.6               63.0
## 142      Peter Lonard  37        291.4            61.5               62.9
## 143    Phil Mickelson  34        295.4            62.9               69.5
## 144     Retief Goosen  35        294.2            62.5               68.7
## 145      Rich Barcelo  29        293.1            59.0               64.4
## 146         Rich Beem  34        296.7            61.7               63.7
## 147 Richard S. Johnso  28        283.4            69.3               64.5
## 148    Robert Allenby  33        294.9            65.0               70.3
## 149     Robert Damron  32        277.2            70.0               63.8
## 150      Robert Gamez  36        288.1            65.2               65.7
## 151     Rocco Mediate  41        283.4            69.9               65.5
## 152      Rod Pampling  35        292.1            59.8               66.1
## 153  Roger Tambellini  29        297.8            59.2               63.2
## 154   Roland Thatcher  27        293.1            64.8               68.0
## 155    Rory Sabbatini  28        292.2            59.2               64.9
## 156      Russ Cochran  46        280.3            65.4               63.6
## 157       Ryan Palmer  28        295.6            63.2               65.5
## 158        Scott Hend  31        312.6            54.1               62.7
## 159        Scott Hoch  49        280.4            68.8               68.6
## 160    Scott McCarron  39        294.1            64.9               65.4
## 161     Scott Simpson  49        278.7            70.7               62.0
## 162    Scott Verplank  40        278.0            77.1               68.5
## 163     Sergio Garcia  24        295.1            58.5               70.8
## 164     Shaun Micheel  35        287.5            63.1               67.0
## 165  Shigeki Maruyama  35        280.1            63.7               64.6
## 166      Skip Kendall  40        281.3            68.2               62.7
## 167       Spike McRoy  36        281.5            67.1               64.9
## 168      Stephen Ames  40        287.9            65.0               68.4
## 169    Stephen Leaney  35        282.3            64.8               64.8
## 170       Steve Allan  31        301.2            59.3               66.8
## 171   Steve Elkington  42        287.1            68.2               66.1
## 172      Steve Flesch  37        279.9            65.8               65.8
## 173      Steve Lowery  44        288.8            58.3               63.9
## 174        Steve Pate  43        283.5            64.8               65.1
## 175    Steve Stricker  37        281.8            52.7               59.3
## 176      Stewart Cink  31        290.5            58.7               66.4
## 177    Stuart Appleby  33        293.2            62.5               65.1
## 178       Tag Ridings  30        301.0            56.4               64.2
## 179         Ted Purdy  31        289.2            70.1               67.4
## 180       Tiger Woods  28        301.9            56.1               66.9
## 181         Tim Clark  28        278.8            72.0               65.8
## 182        Tim Herron  34        293.8            58.0               65.1
## 183      Tim Petrovic  38        287.2            63.6               63.4
## 184      Todd Fischer  35        280.1            61.7               63.9
## 185     Todd Hamilton  39        283.5            58.7               62.7
## 186         Tom Byrum  44        272.6            74.7               63.7
## 187        Tom Carter  36        296.5            55.1               62.9
## 188        Tom Lehman  45        287.2            69.7               71.4
## 189  Tom Pernice, Jr.  45        286.0            68.2               66.8
## 190  Tommy Armour III  45        290.5            62.4               64.3
## 191      Tommy Tolles  38        287.8            54.0               61.9
## 192    Tripp Isenhour  36        286.2            61.7               62.1
## 193     Vaughn Taylor  28        292.5            65.1               68.4
## 194       Vijay Singh  41        300.8            60.4               73.0
## 195      Woody Austin  40        291.3            63.3               68.1
## 196      Zach Johnson  28        285.6            71.9               67.9
##     AverageNumofPutts SavePercent MoneyRank NumEvents TotalWinnings
## 1               1.767        50.9       123        27        632878
## 2               1.757        59.3         7        16       3724984
## 3               1.795        50.7        54        24       1313484
## 4               1.787        47.7       101        20        808373
## 5               1.766        43.5       146        30        486053
## 6               1.780        50.9        52        23       1355433
## 7               1.777        40.4        80        23        962167
## 8               1.740        53.8        75        27       1036958
## 9               1.809        42.2       141        20        500818
## 10              1.777        47.7        83        15        943589
## 11              1.773        50.5       124        31        631143
## 12              1.829        49.7       140        32        503252
## 13              1.808        42.3       198        27        162701
## 14              1.768        43.1        39        30       1553826
## 15              1.769        51.9       130        30        581421
## 16              1.756        44.8        74        23       1046064
## 17              1.788        46.9        79        26        966554
## 18              1.749        52.9        76        28       1016899
## 19              1.759        55.6       137        34        524907
## 20              1.775        49.3        57        31       1259780
## 21              1.780        52.7        97        31        836382
## 22              1.766        48.5        86        24        919256
## 23              1.737        52.2       122        32        645196
## 24              1.844        52.1       200        24        159939
## 25              1.780        42.1        69        30       1156517
## 26              1.771        47.3       107        30        779189
## 27              1.733        52.9        51        28       1367963
## 28              1.798        47.1        29        27       1955395
## 29              1.799        46.1        24        28       2264985
## 30              1.802        48.9        33        30       1703485
## 31              1.796        34.2       217        24        100283
## 32              1.752        50.6        12        27       2971843
## 33              1.766        51.6        56        23       1292732
## 34              1.811        33.2       115        33        692785
## 35              1.802        45.7       175        33        258061
## 36              1.762        57.4        89        23        881938
## 37              1.787        52.9       128        25        595820
## 38              1.791        53.1       143        30        494569
## 39              1.797        55.3        55        16       1308586
## 40              1.815        50.5       152        27        423749
## 41              1.810        49.6       160        27        356943
## 42              1.811        62.3       165        28        315540
## 43              1.778        41.4       207        31        135731
## 44              1.748        52.2       108        33        763253
## 45              1.792        45.6       157        28        397606
## 46              1.757        54.0       144        26        490414
## 47              1.745        46.2        28        16       2009819
## 48              1.796        43.2       169        30        293617
## 49              1.802        60.1       155        26        402589
## 50              1.847        47.7       245        25         21250
## 51              1.786        49.2       197        27        164435
## 52              1.779        50.0       147        26        479465
## 53              1.758        55.7        22        24       2357531
## 54              1.753        51.9        10        24       3075094
## 55              1.755        52.4       133        33        561341
## 56              1.776        44.1       161        22        346632
## 57              1.774        61.1       117        21        677035
## 58              1.842        41.5       184        23        230329
## 59              1.784        45.6        92        23        854638
## 60              1.770        41.3        46        26       1487912
## 61              1.740        47.9         2        16       5787225
## 62              1.795        51.8       211        36        115185
## 63              1.759        40.8        58        27       1259235
## 64              1.781        47.1        50        16       1396109
## 65              1.769        54.6        25        29       2103732
## 66              1.750        43.9        59        24       1259048
## 67              1.788        42.7       170        30        287150
## 68              1.752        61.0        61        26       1236909
## 69              1.749        47.5       138        33        519935
## 70              1.808        43.8       180        29        239319
## 71              1.726        57.7       156        22        402380
## 72              1.810        42.5       208        24        130783
## 73              1.765        59.3        99        30        816889
## 74              1.748        51.7        48        25       1446765
## 75              1.788        54.3        72        31       1066838
## 76              1.780        41.6       104        27        795206
## 77              1.823        43.9       199        27        162120
## 78              1.775        45.8       100        30        813089
## 79              1.788        41.7        93        30        848823
## 80              1.769        49.1       102        32        807344
## 81              1.776        46.2       174        27        260816
## 82              1.778        42.0       131        29        567931
## 83              1.790        52.5       164        28        317770
## 84              1.797        51.3       193        26        190184
## 85              1.758        56.1        27        23       2071626
## 86              1.776        56.3       120        33        660038
## 87              1.810        46.4       149        34        448914
## 88              1.789        49.5        43        20       1527883
## 89              1.777        45.9        77        28       1007635
## 90              1.763        52.8        17        29       2496223
## 91              1.759        51.9        40        24       1550135
## 92              1.798        41.7        81        26        952548
## 93              1.755        47.7        49        32       1443363
## 94              1.811        35.1        41        31       1536882
## 95              1.789        50.0       189        19        210448
## 96              1.736        54.8        21        22       2359507
## 97              1.804        55.9        90        20        874280
## 98              1.773        38.9       153        17        423263
## 99              1.764        46.1       109        29        737957
## 100             1.791        50.6       114        28        698203
## 101             1.760        56.0        70        27       1133166
## 102             1.803        42.2        34        25       1695333
## 103             1.754        61.7       106        20        779197
## 104             1.745        51.2       142        17        495051
## 105             1.769        54.0        42        25       1531023
## 106             1.762        49.4        62        22       1236765
## 107             1.770        45.8        26        24       2077775
## 108             1.785        47.9       166        30        301308
## 109             1.776        45.8        30        23       1952043
## 110             1.776        46.5       119        32        674910
## 111             1.823        47.0       244        21         21660
## 112             1.775        49.7        87        32        901159
## 113             1.799        53.7        85        27        928759
## 114             1.752        49.3        38        24       1566426
## 115             1.808        41.9       190        26        205171
## 116             1.781        51.5        96        25        837482
## 117             1.792        60.2       188        25        213707
## 118             1.738        59.3        78        22        998677
## 119             1.797        48.4       134        30        557454
## 120             1.791        52.2        35        21       1646267
## 121             1.796        43.5       173        31        264076
## 122             1.765        52.3       112        24        717876
## 123             1.738        54.0        15        29       2718765
## 124             1.768        53.7       135        17        543866
## 125             1.788        48.1       167        19        300317
## 126             1.811        43.9       132        32        565013
## 127             1.749        53.3        98        25        817117
## 128             1.795        46.6       139        28        509258
## 129             1.763        48.9        88        28        882872
## 130             1.790        31.8       195        17        166185
## 131             1.749        53.7        14        22       2761537
## 132             1.781        52.4       113        33        701240
## 133             1.746        58.7       103        15        796086
## 134             1.806        40.7       172        22        265424
## 135             1.771        44.2       129        23        583537
## 136             1.775        47.8       127        30        597034
## 137             1.813        56.8       163        28        345798
## 138             1.803        45.0       168        32        299385
## 139             1.780        51.1       111        32        723724
## 140             1.759        43.0        63        33       1234345
## 141             1.745        51.7       126        23        601438
## 142             1.819        47.1       118        23        675189
## 143             1.759        56.4         3        22       5784823
## 144             1.743        54.6         6        16       3885573
## 145             1.797        35.3       186        26        223597
## 146             1.814        56.4       183        28        230499
## 147             1.758        50.8       148        32        461184
## 148             1.798        46.5        44        26       1513537
## 149             1.792        49.4        84        28        933389
## 150             1.767        48.3       110        31        725369
## 151             1.800        45.0       176        19        257692
## 152             1.763        58.9        31        26       1737725
## 153             1.796        49.3       181        28        234164
## 154             1.811        42.3       177        23        247987
## 155             1.792        48.9        16        26       2500397
## 156             1.791        45.7       194        25        185108
## 157             1.768        51.3        37        33       1592344
## 158             1.806        49.0       136        29        531263
## 159             1.786        50.0        60        17       1239360
## 160             1.772        49.7       105        27        790720
## 161             1.800        51.2       192        18        190986
## 162             1.743        47.1        20        24       2365594
## 163             1.790        48.1         9        18       3239216
## 164             1.793        47.2        82        27        949919
## 165             1.746        49.4        23        26       2301693
## 166             1.767        48.3        64        29       1206440
## 167             1.810        45.8       159        33        374187
## 168             1.755        54.5         8        27       3303207
## 169             1.805        55.3        68        24       1166560
## 170             1.795        48.9       121        33        648480
## 171             1.796        49.0       179        20        243239
## 172             1.763        49.0        18        31       2461789
## 173             1.769        43.8        66        28       1191245
## 174             1.797        48.5       191        24        199569
## 175             1.745        48.8       151        27        440906
## 176             1.723        56.1         5        28       4450272
## 177             1.764        51.4        13        25       2949234
## 178             1.751        49.4       125        18        623262
## 179             1.769        46.6        36        35       1636876
## 180             1.724        53.5         4        19       5365472
## 181             1.764        53.3        71        26       1108190
## 182             1.787        47.8        32        26       1727577
## 183             1.776        49.2        65        32       1193355
## 184             1.769        46.7        94        33        847996
## 185             1.774        44.6        11        27       3063780
## 186             1.776        52.5        91        25        873140
## 187             1.790        42.7       158        35        395782
## 188             1.778        44.0        53        19       1343278
## 189             1.778        55.4        47        31       1475273
## 190             1.807        43.6        95        28        844636
## 191             1.776        43.5       201        25        151852
## 192             1.795        43.8       218        22         90699
## 193             1.761        41.9        67        27       1176435
## 194             1.757        50.9         1        29      10905167
## 195             1.775        46.9        45        29       1495982
## 196             1.751        45.3        19        30       2417685
##     AverageWinnings
## 1             23440
## 2            232812
## 3             54729
## 4             40419
## 5             16202
## 6             58932
## 7             41833
## 8             38406
## 9             25041
## 10            62906
## 11            20359
## 12            15727
## 13             6026
## 14            51794
## 15            19381
## 16            45481
## 17            37175
## 18            36318
## 19            15438
## 20            40638
## 21            26980
## 22            38302
## 23            20162
## 24             6664
## 25            38551
## 26            25973
## 27            48856
## 28            72422
## 29            80892
## 30            56783
## 31             4178
## 32           110068
## 33            56206
## 34            20993
## 35             7820
## 36            38345
## 37            23833
## 38            16486
## 39            81787
## 40            15694
## 41            13220
## 42            11269
## 43             4378
## 44            23129
## 45            14200
## 46            18862
## 47           125614
## 48             9787
## 49            15484
## 50              850
## 51             6090
## 52            18441
## 53            98230
## 54           128129
## 55            17010
## 56            15756
## 57            32240
## 58            10014
## 59            37158
## 60            57227
## 61           361702
## 62             3200
## 63            46638
## 64            87257
## 65            72542
## 66            52460
## 67             9572
## 68            47573
## 69            15756
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## 71            18290
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## 73            27230
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## 78            27103
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## 80            25230
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## 95            11076
## 96           107250
## 97            43714
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## 131          125524
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## 185          113473
## 186           34926
## 187           11308
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## 189           47589
## 190           30166
## 191            6074
## 192            4123
## 193           43572
## 194          376040
## 195           51586
## 196           80590
  1. Visualize the data concisely using scatter plots and histograms. For example, you can use R functions such as pairs(), hist(), and pairs.panels() in the R package psych. Briefly describe the visualization results, e.g., outliers, skewness, strong correlations, clusters, and so on.
hist(PGA$Age)

We can infer that most of the players are in age range 30-40

hist(PGA$DrivingAccuracy)

The driving accuracy of most players is between 60-65%

Some correalted scatter plots-

plot(PGA$AverageDrive,PGA$AverageWinnings,pch=2,col="purple")

plot(PGA$MoneyRank,PGA$AverageWinnings,pch=2,col="blue")

Pairs between all the variables to get an idea about the correlation between the variables

pairs (PGA,pch=20)

plot(~PGA$AverageWinnings + PGA$Age + PGA$AverageDrive + PGA$DrivingAccuracy + PGA$GreensonRegulation + PGA$AverageNumofPutts + PGA$SavePercent + PGA$NumEvents,data = PGA,pch=2,col="purple")

Box plot of average winnings

boxplot(PGA$AverageWinnings,
main = "Box plot of AverageWinnings",
xlab = "",
ylab = "AverageWinnings",
col = "orange",
border = "brown",
horizontal = TRUE,
notch = TRUE
)

  1. Fit a multiple linear regression to the data. Use Average winnings as the response variable and use Age, Average Drive (Yards), Driving Accuracy (percent), Greens on Regulation (%), Average # of Putts, Save Percent, and # Events as covariates. Based on the regression results, which covariate has the largest estimated slope (in absolute value)? Which covariates are important in terms of the association with the response variable?

Model1 testing all variables given

model_pga <- lm(AverageWinnings~Age+AverageDrive+DrivingAccuracy+NumEvents+AverageNumofPutts+SavePercent+GreensonRegulation, data = PGA)

summary(model_pga)
## 
## Call:
## lm(formula = AverageWinnings ~ Age + AverageDrive + DrivingAccuracy + 
##     NumEvents + AverageNumofPutts + SavePercent + GreensonRegulation, 
##     data = PGA)
## 
## Residuals:
##    Min     1Q Median     3Q    Max 
## -71690 -22176  -6735  17147 247928 
## 
## Coefficients:
##                      Estimate Std. Error t value Pr(>|t|)    
## (Intercept)         945579.88  305886.59   3.091  0.00230 ** 
## Age                   -587.13     519.32  -1.131  0.25968    
## AverageDrive           -94.76     567.42  -0.167  0.86755    
## DrivingAccuracy      -2360.57     854.02  -2.764  0.00628 ** 
## NumEvents            -3159.22     644.24  -4.904 2.03e-06 ***
## AverageNumofPutts  -694226.49  138155.99  -5.025 1.17e-06 ***
## SavePercent           1395.67     587.54   2.375  0.01853 *  
## GreensonRegulation    8466.04    1303.87   6.493 7.30e-10 ***
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## Residual standard error: 41430 on 188 degrees of freedom
## Multiple R-squared:  0.4527, Adjusted R-squared:  0.4323 
## F-statistic: 22.21 on 7 and 188 DF,  p-value: < 2.2e-16
model_pga$coefficients
##        (Intercept)                Age       AverageDrive 
##       945579.87536         -587.12529          -94.76127 
##    DrivingAccuracy          NumEvents  AverageNumofPutts 
##        -2360.56944        -3159.22407      -694226.48514 
##        SavePercent GreensonRegulation 
##         1395.66667         8466.03572
model_pga$residuals
##           1           2           3           4           5           6 
##  -7763.9747  97689.0095  18807.2522 -13861.9772  -9996.6673 -10123.5373 
##           7           8           9          10          11          12 
## -10593.3840 -37173.6736  -2773.3291 -18942.3176 -20839.4118  27672.1374 
##          13          14          15          16          17          18 
##   6716.3936  -6323.1582   2725.7362 -14906.6410   4107.5204  -3653.2150 
##          19          20          21          22          23          24 
## -45992.2552   8699.3642 -32095.3714 -35056.5710 -13121.5366  15249.8967 
##          25          26          27          28          29          30 
## -33339.7647 -24059.8661 -37421.4212  11044.5512  30938.3846  22924.2846 
##          31          32          33          34          35          36 
##  -1724.2369  36729.1197  -1490.0068 -15622.6725  37749.1317   4362.8128 
##          37          38          39          40          41          42 
## -42754.7836  28856.1308  41657.2840 -10844.6481 -21974.1088  -4259.7446 
##          43          44          45          46          47          48 
##  -9257.9100 -34539.0808 -31703.1139 -45557.6648  31286.8330 -10083.6707 
##          49          50          51          52          53          54 
## -11745.0047  56807.9479  18445.9081 -18721.6214 -10321.2893  59960.8572 
##          55          56          57          58          59          60 
##  -8555.3835 -34093.4117 -38398.3564  36324.2744  -7269.3055  -5590.4775 
##          61          62          63          64          65          66 
## 232199.2639  47168.6227   6947.4691  -5262.6742  52121.0984 -32741.4274 
##          67          68          69          70          71          72 
##  23037.6870 -57314.2402   3999.9073   7676.3741 -62050.8333  29050.8108 
##          73          74          75          76          77          78 
## -48928.0964 -19887.4571  -3343.6799   3901.8448  51215.7962  -7146.9241 
##          79          80          81          82          83          84 
##  -5434.5448  -8989.9523 -11286.3346 -22873.0401 -38276.7524 -26465.1308 
##          85          86          87          88          89          90 
##   3265.3484  -8021.1939  26322.9736   8910.1620 -19645.6910  21502.2450 
##          91          92          93          94          95          96 
## -24251.3500 -29365.3351  12970.9630  47369.3486 -38816.9649 -25859.1838 
##          97          98          99         100         101         102 
## -38830.2985 -62455.8766   9942.7136 -53967.5365  -4558.1357  31272.7256 
##         103         104         105         106         107         108 
## -21836.0891 -68733.7925  -7544.2305 -51916.3028  15199.1644  -5701.3114 
##         109         110         111         112         113         114 
##   1616.8938 -12325.7656  -2154.7779  10860.3905  23713.4904  -8858.4922 
##         115         116         117         118         119         120 
##   2057.3635 -45133.3295   8338.2777 -51681.1838 -28254.4647 -11216.9956 
##         121         122         123         124         125         126 
##  49603.4630 -24508.8090  41242.9350 -24949.7821 -64606.1785  19828.5734 
##         127         128         129         130         131         132 
## -21016.6829 -16156.4183 -26059.0851 -16828.4227  35569.8657 -20516.1260 
##         133         134         135         136         137         138 
##   -595.7606   3890.8253 -30281.2924 -22037.1769  24101.4668   4118.3974 
##         139         140         141         142         143         144 
## -20425.7380   4537.9770 -52040.9725  15498.7974 137343.9149  95996.1593 
##         145         146         147         148         149         150 
## -17720.0318 -13839.7705 -19699.4015 -16311.3946  21483.9410 -18829.6178 
##         151         152         153         154         155         156 
## -23783.0006 -25101.2803 -20795.4087 -43026.8762  42963.4547 -10106.8893 
##         157         158         159         160         161         162 
##   1835.8322  -5548.3888 -11886.5715 -19900.7317  -2777.1531  25013.4668 
##         163         164         165         166         167         168 
##  47529.0397 -16705.4165  18814.8420  27237.8741  19402.2220  29490.7733 
##         169         170         171         172         173         174 
##   6413.2172 -22592.4810 -38539.1967  33810.3306   2220.9333 -27671.1562 
##         175         176         177         178         179         180 
## -29840.6902  41821.4188  47803.7822 -71689.6767  15280.5052 130114.7662 
##         181         182         183         184         185         186 
## -14835.7644  10452.0349  19998.4811   -959.9942  80010.9178  16713.9600 
##         187         188         189         190         191         192 
##   6158.3642 -28237.4473   5941.8382  23542.8129 -35284.3437 -18784.1037 
##         193         194         195         196 
## -33901.0125 247928.2363 -11605.1512  20538.1655
model_pga$fitted.values
##           1           2           3           4           5           6 
##  31203.9747 135122.9905  35921.7478  54280.9772  26198.6673  69055.5373 
##           7           8           9          10          11          12 
##  52426.3840  75579.6736  27814.3291  81848.3176  41198.4118 -11945.1374 
##          13          14          15          16          17          18 
##   -690.3936  58117.1582  16655.2638  60387.6410  33067.4796  39971.2150 
##          19          20          21          22          23          24 
##  61430.2552  31938.6358  59075.3714  73358.5710  33283.5366  -8585.8967 
##          25          26          27          28          29          30 
##  71890.7647  50032.8661  86277.4212  61377.4488  49953.6154  33858.7154 
##          31          32          33          34          35          36 
##   5902.2369  73338.8803  57696.0068  36615.6725 -29929.1317  33982.1872 
##          37          38          39          40          41          42 
##  66587.7836 -12370.1308  40129.7160  26538.6481  35194.1088  15528.7446 
##          43          44          45          46          47          48 
##  13635.9100  57668.0808  45903.1139  64419.6648  94327.1670  19870.6707 
##          49          50          51          52          53          54 
##  27229.0047 -55957.9479 -12355.9081  37162.6214 108551.2893  68168.1428 
##          55          56          57          58          59          60 
##  25565.3835  49849.4117  70638.3564 -26310.2744  44427.3055  62817.4775 
##          61          62          63          64          65          66 
## 129502.7361 -43968.6227  39690.5309  92519.6742  20420.9016  85201.4274 
##          67          68          69          70          71          72 
## -13465.6870 104887.2402  11756.0927    575.6259  80340.8333 -23601.8108 
##          73          74          75          76          77          78 
##  76158.0964  77758.4571  37757.6799  25550.1552 -45211.7962  34249.9241 
##          79          80          81          82          83          84 
##  33728.5448  34219.9523  20946.3346  42457.0401  49625.7524  33780.1308 
##          85          86          87          88          89          90 
##  86805.6516  28022.1939 -13119.9736  67483.8380  55632.6910  64574.7550 
##          91          92          93          94          95          96 
##  88840.3500  66001.3351  32134.0370   2207.6514  49892.9649 133109.1838 
##          97          98          99         100         101         102 
##  82544.2985  87353.8766  15504.2864  78903.5365  46527.1357  36540.2744 
##         103         104         105         106         107         108 
##  60796.0891  97854.7925  68785.2305 108133.3028  71374.8356  15745.3114 
##         109         110         111         112         113         114 
##  83254.1062  33416.7656   3185.7779  17300.6095  10684.5096  74126.4922 
##         115         116         117         118         119         120 
##   5833.6365  78632.3295    209.7223  97075.1838  46836.4647  89610.9956 
##         121         122         123         124         125         126 
## -41084.4630  54420.8090  52508.0650  56941.7821  80412.1785  -2171.5734 
##         127         128         129         130         131         132 
##  53701.6829  34344.4183  57590.0851  26604.4227  89954.1343  41766.1260 
##         133         134         135         136         137         138 
##  53667.7606   8174.1747  55652.2924  41938.1769 -11751.4668   5237.6026 
##         139         140         141         142         143         144 
##  43041.7380  32866.0230  78189.9725  13857.2026 125603.0851 146851.8407 
##         145         146         147         148         149         150 
##  26320.0318  22071.7705  34111.4015  74524.3946  11851.0590  42228.6178 
##         151         152         153         154         155         156 
##  37346.0006  91937.2803  29158.4087  53808.8762  53205.5453  17510.8893 
##         157         158         159         160         161         162 
##  46417.1678  23867.3888  84790.5715  49186.7317  13387.1531  73552.5332 
##         163         164         165         166         167         168 
## 132426.9603  51887.4165  69712.1580  14363.1259  -8063.2220  92850.2267 
##         169         170         171         172         173         174 
##  42193.7828  42243.4810  50701.1967  45602.6694  40323.0667  35986.1562 
##         175         176         177         178         179         180 
##  46170.6902 117116.5812  70165.2178 106315.6767  31487.4948 152278.2338 
##         181         182         183         184         185         186 
##  57458.7644  55992.9651  17293.5189  26656.9942  33462.0822  18212.0400 
##         187         188         189         190         191         192 
##   5149.6358  98936.4473  41647.1618   6623.1871  41358.3437  22907.1037 
##         193         194         195         196 
##  77473.0125 128111.7637  63191.1512  60051.8345
summary(model_pga)$coef
##                         Estimate  Std. Error    t value     Pr(>|t|)
## (Intercept)         945579.87536 305886.5949  3.0912760 2.296050e-03
## Age                   -587.12529    519.3241 -1.1305567 2.596820e-01
## AverageDrive           -94.76127    567.4194 -0.1670039 8.675464e-01
## DrivingAccuracy      -2360.56944    854.0207 -2.7640660 6.276772e-03
## NumEvents            -3159.22407    644.2424 -4.9037814 2.026906e-06
## AverageNumofPutts  -694226.48514 138155.9949 -5.0249465 1.167423e-06
## SavePercent           1395.66667    587.5388  2.3754460 1.853368e-02
## GreensonRegulation    8466.03572   1303.8682  6.4930148 7.300592e-10

Here DrivingAccuracy,GreensonRegulation,AverageNumofPutts,NumEvents and Age have the highest slopes and they are the major factors that affect the reponse variable.

reduced = lm(PGA$AverageWinnings ~ PGA$MoneyRank + PGA$NumEvents, data=PGA) # Reducedodel
full = model_pga # full model
anova(reduced, model_pga)
## Warning in anova.lmlist(object, ...): models with response
## '"AverageWinnings"' removed because response differs from model 1
## Analysis of Variance Table
## 
## Response: PGA$AverageWinnings
##                Df     Sum Sq    Mean Sq F value    Pr(>F)    
## PGA$MoneyRank   1 2.9254e+11 2.9254e+11 220.083 < 2.2e-16 ***
## PGA$NumEvents   1 4.0588e+10 4.0588e+10  30.535 1.052e-07 ***
## Residuals     193 2.5654e+11 1.3292e+09                      
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1

Here P value is less than 0.05 hence we do not reject the null hypothesis.

  1. Based on the fitted regression, is AverageDrive a covariate with statistically significant nonzero slope? State your conclusion and reasons.
summary(model_pga)
## 
## Call:
## lm(formula = AverageWinnings ~ Age + AverageDrive + DrivingAccuracy + 
##     NumEvents + AverageNumofPutts + SavePercent + GreensonRegulation, 
##     data = PGA)
## 
## Residuals:
##    Min     1Q Median     3Q    Max 
## -71690 -22176  -6735  17147 247928 
## 
## Coefficients:
##                      Estimate Std. Error t value Pr(>|t|)    
## (Intercept)         945579.88  305886.59   3.091  0.00230 ** 
## Age                   -587.13     519.32  -1.131  0.25968    
## AverageDrive           -94.76     567.42  -0.167  0.86755    
## DrivingAccuracy      -2360.57     854.02  -2.764  0.00628 ** 
## NumEvents            -3159.22     644.24  -4.904 2.03e-06 ***
## AverageNumofPutts  -694226.49  138155.99  -5.025 1.17e-06 ***
## SavePercent           1395.67     587.54   2.375  0.01853 *  
## GreensonRegulation    8466.04    1303.87   6.493 7.30e-10 ***
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## Residual standard error: 41430 on 188 degrees of freedom
## Multiple R-squared:  0.4527, Adjusted R-squared:  0.4323 
## F-statistic: 22.21 on 7 and 188 DF,  p-value: < 2.2e-16

Based on the summary the p value of averagedrive is 0.87 which greate than 0.05 and hence we conclude that it has a zero slope.

  1. If you run a simple linear regression of lm(AverageWinnings ~ AverageDrive, data=d), is AverageDrive a covariate with statistically significant nonzero slope in this case? State your conclusion and reasons.
model_pga_1 <- lm(PGA$AverageWinnings ~ PGA$AverageDrive,data = PGA) 
summary(model_pga_1)
## 
## Call:
## lm(formula = PGA$AverageWinnings ~ PGA$AverageDrive, data = PGA)
## 
## Residuals:
##    Min     1Q Median     3Q    Max 
## -62001 -28630 -13234  10847 311571 
## 
## Coefficients:
##                   Estimate Std. Error t value Pr(>|t|)   
## (Intercept)      -331133.4   134365.6  -2.464  0.01459 * 
## PGA$AverageDrive    1315.2      467.7   2.812  0.00543 **
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## Residual standard error: 54040 on 194 degrees of freedom
## Multiple R-squared:  0.03916,    Adjusted R-squared:  0.03421 
## F-statistic: 7.907 on 1 and 194 DF,  p-value: 0.005429

In this case AverageDrive is a covariate with significant non zero slope as the p value is way less than 0.05.This specific regressor affects the response variable according to the t-test.

  1. If you run a multiple linear regression similar to the one in question 3 except you remove Driving Accuracy as a covariate, is AverageDrive a significant covariate with nonzero slope in this case? Are these results consistent or contradicted with the results in questions 4 and 5? State your conclusion and reasons.
model_pga_6 <- lm(PGA$AverageWinnings ~ PGA$Age + PGA$AverageDrive  + PGA$GreensonRegulation + PGA$AverageNumofPutts + PGA$SavePercent + PGA$MoneyRank + PGA$NumEvents,data = PGA)

summary(model_pga_6)
## 
## Call:
## lm(formula = PGA$AverageWinnings ~ PGA$Age + PGA$AverageDrive + 
##     PGA$GreensonRegulation + PGA$AverageNumofPutts + PGA$SavePercent + 
##     PGA$MoneyRank + PGA$NumEvents, data = PGA)
## 
## Residuals:
##    Min     1Q Median     3Q    Max 
## -50234 -19322  -6841   9506 260123 
## 
## Coefficients:
##                          Estimate Std. Error t value Pr(>|t|)    
## (Intercept)              82492.68  266149.64   0.310  0.75694    
## PGA$Age                    -25.19     449.10  -0.056  0.95533    
## PGA$AverageDrive          1032.87     350.65   2.946  0.00363 ** 
## PGA$GreensonRegulation     727.16    1146.28   0.634  0.52661    
## PGA$AverageNumofPutts  -151065.82  136788.06  -1.104  0.27084    
## PGA$SavePercent            537.86     514.19   1.046  0.29689    
## PGA$MoneyRank             -536.39      61.88  -8.668 2.02e-15 ***
## PGA$NumEvents            -3128.68     552.88  -5.659 5.61e-08 ***
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## Residual standard error: 35730 on 188 degrees of freedom
## Multiple R-squared:  0.5931, Adjusted R-squared:  0.5779 
## F-statistic: 39.14 on 7 and 188 DF,  p-value: < 2.2e-16

If we remove driving accuracy as a covariate it is noticed that AverageDrive acts as a significant covariate in the model which differs from the result obtained in 3.

  1. Based on regression results, is the fitted regression model in question 3 a significant model (at least one nonzero slope)? What a bout the fitted regression models in question 5 and 6? State your conclusion and reasons.

Based on the regression analysis the model in question 3 is overfitted for example since drivingaccuracy and averagedrive are strongly related to each other the impact of either of those covariates can not be observed if both are present in the model.

8.1 Using the fitted regression in question 3, obtain the prediction of the response variable for a new player with Age = 35, AverageDrive = 287, DrivingAccuracy = 64, GreensonRegulation = 64.9, AverageNumofPutts = 1.778, SavePercent = 48, NumEvents = 26. Provide a prediction interval and explain what it means.

observations_for_pred_1 <- data.frame(Age = 35, AverageDrive = 287, DrivingAccuracy = 64, GreensonRegulation = 64.9, AverageNumofPutts = 1.778, SavePercent = 48, NumEvents = 26)

y_pred_data8 <- predict(model_pga, newdata = observations_for_pred_1, interval = 'confidence', level = 0.95, type = 'response')

y_pred_data8
##        fit     lwr      upr
## 1 46720.76 40657.8 52783.72

This means that 95% of predicted data lies between lower bound and upper bound.

8.2 Similarly, make another prediction for the case of Age = 42, AverageDrive = 295, DrivingAccuracy = 69, GreensonRegulation = 67.7, AverageNumofPutts = 1.80, SavePercent = 54, NumEvents = 30.

observations_for_pred_2=data.frame(Age=c(42), AverageDrive=c(295),DrivingAccuracy=c(69),
GreensonRegulation= c(67.7),AverageNumofPutts = c(1.80), SavePercent =c(54) , NumEvents= c(30))
observations_for_pred_2
##   Age AverageDrive DrivingAccuracy GreensonRegulation AverageNumofPutts
## 1  42          295              69               67.7               1.8
##   SavePercent NumEvents
## 1          54        30
y_pred_8_2 <- predict(model_pga, newdata = observations_for_pred_2, interval = 'confidence', level = 0.95, type = 'response')

y_pred_8_2
##        fit      lwr      upr
## 1 34218.97 14565.55 53872.39

8.3 Make a third prediction for the case of Age = 45, AverageDrive = 320, DrivingAccuracy = 70, GreensonRegulation = 67.7, AverageNumofPutts = 1.80, SavePercent = 54, NumEvents = 30.

observations_for_pred_3=data.frame(Age=c(45), AverageDrive=c(320),DrivingAccuracy=c(70),
GreensonRegulation= c(67.7),AverageNumofPutts = c(1.80), SavePercent =c(54) , NumEvents= c(30))
observations_for_pred_3
##   Age AverageDrive DrivingAccuracy GreensonRegulation AverageNumofPutts
## 1  45          320              70               67.7               1.8
##   SavePercent NumEvents
## 1          54        30
y_pred_8_3 <- predict(model_pga, newdata = observations_for_pred_3, interval = 'confidence', level = 0.95, type = 'response')

y_pred_8_3
##        fit       lwr      upr
## 1 27727.99 -17967.85 73423.83
  1. Compare the predictions from previous questions, what do you observe? For example, which prediction interval is wider? which prediction dosen’t make sense? Among these predictions, which one is extrapolation? State your conclusion and reasons.
y_pred_data8
##        fit     lwr      upr
## 1 46720.76 40657.8 52783.72
y_pred_8_2
##        fit      lwr      upr
## 1 34218.97 14565.55 53872.39
y_pred_8_3
##        fit       lwr      upr
## 1 27727.99 -17967.85 73423.83

The range of Average Winning in prediction 1 is the least and in prediction 3 is the highest also it doesn’t make sense since average winning cannot have a negative value and in our 3 prediction in the lower bound we have got -17967.

model_pga <- lm(AverageWinnings~Age+AverageDrive+DrivingAccuracy+NumEvents+AverageNumofPutts+SavePercent+GreensonRegulation, data = PGA)


cbind(PGA, leverage=hatvalues(model_pga))
##                  Name Age AverageDrive DrivingAccuracy GreensonRegulation
## 1      Aaron Baddeley  23        288.0            53.1               58.2
## 2          Adam Scott  24        295.4            57.7               65.6
## 3          Alex Cejka  34        285.8            64.2               63.8
## 4         Andre Stolz  34        297.9            59.0               63.0
## 5         Arjun Atwal  31        289.4            60.5               62.5
## 6    Arron Oberholser  29        284.6            68.8               67.0
## 7         Bart Bryant  42        282.1            74.2               68.9
## 8           Ben Crane  28        283.8            64.4               64.2
## 9          Ben Curtis  27        282.1            64.3               63.4
## 10    Bernhard Langer  47        282.2            62.6               65.3
## 11      Billy Andrade  40        283.5            59.7               64.4
## 12      Billy Mayfair  38        285.2            70.1               66.0
## 13  Blaine McCalliste  46        280.9            63.4               63.6
## 14        Bo Van Pelt  29        294.4            65.1               67.7
## 15          Bob Burns  36        276.1            67.2               62.3
## 16          Bob Estes  38        278.2            63.9               64.2
## 17           Bob Tway  45        278.2            63.7               64.8
## 18         Brad Faxon  43        273.7            61.6               61.4
## 19     Brenden Pappas  34        298.9            50.1               63.0
## 20    Brent Geiberger  36        291.3            64.8               64.9
## 21      Brett Quigley  35        294.3            57.2               65.8
## 22      Brian Bateman  31        292.2            66.1               66.6
## 23          Brian Gay  33        279.7            64.8               61.5
## 24       Brian Kortan  33        292.4            63.0               62.0
## 25        Briny Baird  32        289.4            65.0               70.6
## 26    Cameron Beckman  34        291.2            66.5               67.0
## 27    Carl Pettersson  27        290.8            61.1               64.5
## 28      Carlos Franco  39        290.6            59.3               67.8
## 29      Chad Campbell  30        288.0            63.9               67.7
## 30  Charles Howell II  25        288.5            64.3               66.1
## 31        Chris Couch  31        302.1            56.2               60.8
## 32      Chris DiMarco  36        277.3            68.6               67.1
## 33        Chris Riley  31        277.3            61.8               62.5
## 34        Chris Smith  35        304.0            59.5               70.4
## 35       Cliff Kresge  36        283.4            62.8               60.5
## 36        Corey Pavin  45        268.2            71.9               62.1
## 37       Craig Barlow  32        291.0            67.8               67.7
## 38       Craig Bowden  36        270.8            76.1               62.9
## 39        Craig Parry  38        276.9            63.5               60.7
## 40        Craig Perks  37        289.4            54.4               63.0
## 41       D.J. Brigman  28        290.7            63.9               65.8
## 42        Dan Forsman  46        281.9            64.3               63.1
## 43          Dan Olsen  37        296.0            51.5               60.7
## 44      Daniel Chopra  30        295.9            58.6               63.9
## 45       Danny Briggs  44        283.8            65.5               68.1
## 46        Danny Ellis  34        286.7            62.9               63.9
## 47      Darren Clarke  36        289.0            62.3               64.0
## 48     David Branshaw  35        285.8            66.6               66.2
## 49        David Frost  45        273.6            66.1               63.7
## 50      David Gossett  25        283.8            54.4               54.7
## 51   David Morland IV  35        272.8            69.4               60.1
## 52      David Peoples  44        281.3            63.7               64.0
## 53         David Toms  37        285.3            63.4               68.5
## 54     Davis Love III  40        300.1            60.1               63.4
## 55        Dean Wilson  34        282.2            63.0               62.0
## 56       Deane Pappas  37        295.3            60.1               63.4
## 57     Dennis Paulson  42        300.1            60.4               63.0
## 58        Dicky Pride  35        280.5            68.3               62.6
## 59        Dudley Hart  36        285.6            63.1               64.2
## 60      Duffy Waldorf  42        285.4            68.6               69.0
## 61          Ernie Els  35        298.0            55.5               65.6
## 62     Esteban Toledo  42        275.2            67.8               60.1
## 63  Frank Lickliter I  35        287.3            66.6               64.8
## 64       Fred Couples  45        294.5            58.8               66.3
## 65          Fred Funk  48        271.9            77.2               65.5
## 66   Fredrik Jacobson  30        287.9            55.6               64.4
## 67        Gene Sauers  42        280.2            66.2               62.0
## 68       Geoff Ogilvy  27        303.3            63.2               66.9
## 69           Glen Day  39        286.1            65.6               61.8
## 70        Grant Waite  40        288.3            59.4               62.8
## 71      Greg Chalmers  31        287.3            61.7               60.6
## 72          Guy Boros  40        281.1            66.3               60.3
## 73        Hank Kuehne  29        314.4            49.9               62.9
## 74    Harrison Frazar  33        298.8            64.3               65.2
## 75       Heath Slocum  30        280.1            71.3               67.1
## 76   Hidemichi Tanaka  33        281.0            72.3               66.1
## 77    Hirofumi Miyase  33        279.7            70.6               60.4
## 78       Hunter Mahan  22        293.0            62.2               63.7
## 79         J.J. Henry  29        301.3            64.5               66.6
## 80         J.L. Lewis  44        288.3            65.5               65.8
## 81         J.P. Hayes  39        280.7            67.7               63.6
## 82         Jason Bohn  31        293.3            65.8               66.8
## 83       Jason Dufner  27        290.7            62.5               65.3
## 84        Jay Delsing  44        288.8            62.1               64.5
## 85           Jay Haas  51        274.5            65.4               66.9
## 86     Jay Williamson  37        288.1            69.3               65.4
## 87       Jeff Brehaut  41        290.9            71.3               66.2
## 88       Jeff Maggert  40        281.2            69.2               67.5
## 89        Jeff Sluman  47        279.6            67.9               68.8
## 90        Jerry Kelly  38        278.1            70.4               68.0
## 91    Jesper Parnevik  39        287.9            60.0               66.1
## 92         Joe Durant  40        287.2            75.1               73.3
## 93        Joe Ogilvie  30        288.8            61.3               62.5
## 94      Joey Sindelar  46        291.5            65.6               67.6
## 95          John Cook  47        270.2            73.4               66.5
## 96          John Daly  38        306.0            53.0               66.4
## 97        John Huston  43        286.4            65.9               68.8
## 98       John Riegger  41        285.0            61.4               67.1
## 99       John Rollins  29        286.7            69.1               62.5
## 100       John Senden  33        296.6            65.6               70.5
## 101     Jonathan Byrd  26        295.8            62.1               61.4
## 102     Jonathan Kaye  34        290.9            64.7               66.5
## 103      Jose Coceres  41        279.4            74.3               63.3
## 104 Jose Maria Olazab  38        277.7            57.0               62.5
## 105    Justin Leonard  32        282.9            67.4               66.1
## 106       Justin Rose  24        290.7            61.5               67.7
## 107         K.J. Choi  34        285.0            61.2               65.9
## 108          Ken Duke  35        284.3            59.0               61.9
## 109       Kenny Perry  44        295.9            62.5               68.6
## 110        Kent Jones  37        286.4            69.8               67.4
## 111    Kevin Muncrief  28        290.7            56.1               59.1
## 112          Kevin Na  21        280.1            68.7               63.4
## 113  Kevin Sutherland  40        286.1            67.1               63.0
## 114     Kirk Triplett  42        279.1            72.1               67.7
## 115          Kris Cox  31        299.1            59.0               62.0
## 116        Lee Janzen  40        286.1            62.2               67.8
## 117      Len Mattiace  37        278.0            67.2               59.1
## 118     Loren Roberts  49        269.1            69.8               66.6
## 119      Lucas Glover  25        303.4            64.4               67.5
## 120       Luke Donald  27        279.8            69.6               69.4
## 121       Mark Brooks  43        273.8            66.8               59.8
## 122 Mark Calcavecchia  44        291.3            64.5               64.1
## 123       Mark Hensby  33        284.6            67.7               63.3
## 124      Mark O'Meara  47        272.9            67.0               62.5
## 125       Mark Wilson  30        282.1            72.0               68.9
## 126  Mathias Gronberg  34        292.1            58.5               63.2
## 127        Matt Gogel  33        285.6            68.5               63.2
## 128       Matt Kuchar  26        287.3            64.4               65.3
## 129     Michael Allen  45        291.1            56.5               64.2
## 130       Mike Heinen  37        305.2            62.7               62.8
## 131         Mike Weir  34        282.1            64.1               65.1
## 132    Neal Lancaster  42        291.6            57.6               65.2
## 133        Nick Price  47        272.8            68.3               59.1
## 134      Niclas Fasth  32        289.1            61.6               61.5
## 135   Notah Begay III  32        285.8            69.5               66.2
## 136       Olin Browne  45        281.9            73.5               68.9
## 137       Omar Uresti  36        272.2            73.1               62.6
## 138         Pat Bates  35        275.5            69.9               66.3
## 139         Pat Perez  28        291.4            65.0               66.2
## 140   Patrick Sheehan  35        290.3            63.0               64.9
## 141      Paul Azinger  44        285.1            57.6               63.0
## 142      Peter Lonard  37        291.4            61.5               62.9
## 143    Phil Mickelson  34        295.4            62.9               69.5
## 144     Retief Goosen  35        294.2            62.5               68.7
## 145      Rich Barcelo  29        293.1            59.0               64.4
## 146         Rich Beem  34        296.7            61.7               63.7
## 147 Richard S. Johnso  28        283.4            69.3               64.5
## 148    Robert Allenby  33        294.9            65.0               70.3
## 149     Robert Damron  32        277.2            70.0               63.8
## 150      Robert Gamez  36        288.1            65.2               65.7
## 151     Rocco Mediate  41        283.4            69.9               65.5
## 152      Rod Pampling  35        292.1            59.8               66.1
## 153  Roger Tambellini  29        297.8            59.2               63.2
## 154   Roland Thatcher  27        293.1            64.8               68.0
## 155    Rory Sabbatini  28        292.2            59.2               64.9
## 156      Russ Cochran  46        280.3            65.4               63.6
## 157       Ryan Palmer  28        295.6            63.2               65.5
## 158        Scott Hend  31        312.6            54.1               62.7
## 159        Scott Hoch  49        280.4            68.8               68.6
## 160    Scott McCarron  39        294.1            64.9               65.4
## 161     Scott Simpson  49        278.7            70.7               62.0
## 162    Scott Verplank  40        278.0            77.1               68.5
## 163     Sergio Garcia  24        295.1            58.5               70.8
## 164     Shaun Micheel  35        287.5            63.1               67.0
## 165  Shigeki Maruyama  35        280.1            63.7               64.6
## 166      Skip Kendall  40        281.3            68.2               62.7
## 167       Spike McRoy  36        281.5            67.1               64.9
## 168      Stephen Ames  40        287.9            65.0               68.4
## 169    Stephen Leaney  35        282.3            64.8               64.8
## 170       Steve Allan  31        301.2            59.3               66.8
## 171   Steve Elkington  42        287.1            68.2               66.1
## 172      Steve Flesch  37        279.9            65.8               65.8
## 173      Steve Lowery  44        288.8            58.3               63.9
## 174        Steve Pate  43        283.5            64.8               65.1
## 175    Steve Stricker  37        281.8            52.7               59.3
## 176      Stewart Cink  31        290.5            58.7               66.4
## 177    Stuart Appleby  33        293.2            62.5               65.1
## 178       Tag Ridings  30        301.0            56.4               64.2
## 179         Ted Purdy  31        289.2            70.1               67.4
## 180       Tiger Woods  28        301.9            56.1               66.9
## 181         Tim Clark  28        278.8            72.0               65.8
## 182        Tim Herron  34        293.8            58.0               65.1
## 183      Tim Petrovic  38        287.2            63.6               63.4
## 184      Todd Fischer  35        280.1            61.7               63.9
## 185     Todd Hamilton  39        283.5            58.7               62.7
## 186         Tom Byrum  44        272.6            74.7               63.7
## 187        Tom Carter  36        296.5            55.1               62.9
## 188        Tom Lehman  45        287.2            69.7               71.4
## 189  Tom Pernice, Jr.  45        286.0            68.2               66.8
## 190  Tommy Armour III  45        290.5            62.4               64.3
## 191      Tommy Tolles  38        287.8            54.0               61.9
## 192    Tripp Isenhour  36        286.2            61.7               62.1
## 193     Vaughn Taylor  28        292.5            65.1               68.4
## 194       Vijay Singh  41        300.8            60.4               73.0
## 195      Woody Austin  40        291.3            63.3               68.1
## 196      Zach Johnson  28        285.6            71.9               67.9
##     AverageNumofPutts SavePercent MoneyRank NumEvents TotalWinnings
## 1               1.767        50.9       123        27        632878
## 2               1.757        59.3         7        16       3724984
## 3               1.795        50.7        54        24       1313484
## 4               1.787        47.7       101        20        808373
## 5               1.766        43.5       146        30        486053
## 6               1.780        50.9        52        23       1355433
## 7               1.777        40.4        80        23        962167
## 8               1.740        53.8        75        27       1036958
## 9               1.809        42.2       141        20        500818
## 10              1.777        47.7        83        15        943589
## 11              1.773        50.5       124        31        631143
## 12              1.829        49.7       140        32        503252
## 13              1.808        42.3       198        27        162701
## 14              1.768        43.1        39        30       1553826
## 15              1.769        51.9       130        30        581421
## 16              1.756        44.8        74        23       1046064
## 17              1.788        46.9        79        26        966554
## 18              1.749        52.9        76        28       1016899
## 19              1.759        55.6       137        34        524907
## 20              1.775        49.3        57        31       1259780
## 21              1.780        52.7        97        31        836382
## 22              1.766        48.5        86        24        919256
## 23              1.737        52.2       122        32        645196
## 24              1.844        52.1       200        24        159939
## 25              1.780        42.1        69        30       1156517
## 26              1.771        47.3       107        30        779189
## 27              1.733        52.9        51        28       1367963
## 28              1.798        47.1        29        27       1955395
## 29              1.799        46.1        24        28       2264985
## 30              1.802        48.9        33        30       1703485
## 31              1.796        34.2       217        24        100283
## 32              1.752        50.6        12        27       2971843
## 33              1.766        51.6        56        23       1292732
## 34              1.811        33.2       115        33        692785
## 35              1.802        45.7       175        33        258061
## 36              1.762        57.4        89        23        881938
## 37              1.787        52.9       128        25        595820
## 38              1.791        53.1       143        30        494569
## 39              1.797        55.3        55        16       1308586
## 40              1.815        50.5       152        27        423749
## 41              1.810        49.6       160        27        356943
## 42              1.811        62.3       165        28        315540
## 43              1.778        41.4       207        31        135731
## 44              1.748        52.2       108        33        763253
## 45              1.792        45.6       157        28        397606
## 46              1.757        54.0       144        26        490414
## 47              1.745        46.2        28        16       2009819
## 48              1.796        43.2       169        30        293617
## 49              1.802        60.1       155        26        402589
## 50              1.847        47.7       245        25         21250
## 51              1.786        49.2       197        27        164435
## 52              1.779        50.0       147        26        479465
## 53              1.758        55.7        22        24       2357531
## 54              1.753        51.9        10        24       3075094
## 55              1.755        52.4       133        33        561341
## 56              1.776        44.1       161        22        346632
## 57              1.774        61.1       117        21        677035
## 58              1.842        41.5       184        23        230329
## 59              1.784        45.6        92        23        854638
## 60              1.770        41.3        46        26       1487912
## 61              1.740        47.9         2        16       5787225
## 62              1.795        51.8       211        36        115185
## 63              1.759        40.8        58        27       1259235
## 64              1.781        47.1        50        16       1396109
## 65              1.769        54.6        25        29       2103732
## 66              1.750        43.9        59        24       1259048
## 67              1.788        42.7       170        30        287150
## 68              1.752        61.0        61        26       1236909
## 69              1.749        47.5       138        33        519935
## 70              1.808        43.8       180        29        239319
## 71              1.726        57.7       156        22        402380
## 72              1.810        42.5       208        24        130783
## 73              1.765        59.3        99        30        816889
## 74              1.748        51.7        48        25       1446765
## 75              1.788        54.3        72        31       1066838
## 76              1.780        41.6       104        27        795206
## 77              1.823        43.9       199        27        162120
## 78              1.775        45.8       100        30        813089
## 79              1.788        41.7        93        30        848823
## 80              1.769        49.1       102        32        807344
## 81              1.776        46.2       174        27        260816
## 82              1.778        42.0       131        29        567931
## 83              1.790        52.5       164        28        317770
## 84              1.797        51.3       193        26        190184
## 85              1.758        56.1        27        23       2071626
## 86              1.776        56.3       120        33        660038
## 87              1.810        46.4       149        34        448914
## 88              1.789        49.5        43        20       1527883
## 89              1.777        45.9        77        28       1007635
## 90              1.763        52.8        17        29       2496223
## 91              1.759        51.9        40        24       1550135
## 92              1.798        41.7        81        26        952548
## 93              1.755        47.7        49        32       1443363
## 94              1.811        35.1        41        31       1536882
## 95              1.789        50.0       189        19        210448
## 96              1.736        54.8        21        22       2359507
## 97              1.804        55.9        90        20        874280
## 98              1.773        38.9       153        17        423263
## 99              1.764        46.1       109        29        737957
## 100             1.791        50.6       114        28        698203
## 101             1.760        56.0        70        27       1133166
## 102             1.803        42.2        34        25       1695333
## 103             1.754        61.7       106        20        779197
## 104             1.745        51.2       142        17        495051
## 105             1.769        54.0        42        25       1531023
## 106             1.762        49.4        62        22       1236765
## 107             1.770        45.8        26        24       2077775
## 108             1.785        47.9       166        30        301308
## 109             1.776        45.8        30        23       1952043
## 110             1.776        46.5       119        32        674910
## 111             1.823        47.0       244        21         21660
## 112             1.775        49.7        87        32        901159
## 113             1.799        53.7        85        27        928759
## 114             1.752        49.3        38        24       1566426
## 115             1.808        41.9       190        26        205171
## 116             1.781        51.5        96        25        837482
## 117             1.792        60.2       188        25        213707
## 118             1.738        59.3        78        22        998677
## 119             1.797        48.4       134        30        557454
## 120             1.791        52.2        35        21       1646267
## 121             1.796        43.5       173        31        264076
## 122             1.765        52.3       112        24        717876
## 123             1.738        54.0        15        29       2718765
## 124             1.768        53.7       135        17        543866
## 125             1.788        48.1       167        19        300317
## 126             1.811        43.9       132        32        565013
## 127             1.749        53.3        98        25        817117
## 128             1.795        46.6       139        28        509258
## 129             1.763        48.9        88        28        882872
## 130             1.790        31.8       195        17        166185
## 131             1.749        53.7        14        22       2761537
## 132             1.781        52.4       113        33        701240
## 133             1.746        58.7       103        15        796086
## 134             1.806        40.7       172        22        265424
## 135             1.771        44.2       129        23        583537
## 136             1.775        47.8       127        30        597034
## 137             1.813        56.8       163        28        345798
## 138             1.803        45.0       168        32        299385
## 139             1.780        51.1       111        32        723724
## 140             1.759        43.0        63        33       1234345
## 141             1.745        51.7       126        23        601438
## 142             1.819        47.1       118        23        675189
## 143             1.759        56.4         3        22       5784823
## 144             1.743        54.6         6        16       3885573
## 145             1.797        35.3       186        26        223597
## 146             1.814        56.4       183        28        230499
## 147             1.758        50.8       148        32        461184
## 148             1.798        46.5        44        26       1513537
## 149             1.792        49.4        84        28        933389
## 150             1.767        48.3       110        31        725369
## 151             1.800        45.0       176        19        257692
## 152             1.763        58.9        31        26       1737725
## 153             1.796        49.3       181        28        234164
## 154             1.811        42.3       177        23        247987
## 155             1.792        48.9        16        26       2500397
## 156             1.791        45.7       194        25        185108
## 157             1.768        51.3        37        33       1592344
## 158             1.806        49.0       136        29        531263
## 159             1.786        50.0        60        17       1239360
## 160             1.772        49.7       105        27        790720
## 161             1.800        51.2       192        18        190986
## 162             1.743        47.1        20        24       2365594
## 163             1.790        48.1         9        18       3239216
## 164             1.793        47.2        82        27        949919
## 165             1.746        49.4        23        26       2301693
## 166             1.767        48.3        64        29       1206440
## 167             1.810        45.8       159        33        374187
## 168             1.755        54.5         8        27       3303207
## 169             1.805        55.3        68        24       1166560
## 170             1.795        48.9       121        33        648480
## 171             1.796        49.0       179        20        243239
## 172             1.763        49.0        18        31       2461789
## 173             1.769        43.8        66        28       1191245
## 174             1.797        48.5       191        24        199569
## 175             1.745        48.8       151        27        440906
## 176             1.723        56.1         5        28       4450272
## 177             1.764        51.4        13        25       2949234
## 178             1.751        49.4       125        18        623262
## 179             1.769        46.6        36        35       1636876
## 180             1.724        53.5         4        19       5365472
## 181             1.764        53.3        71        26       1108190
## 182             1.787        47.8        32        26       1727577
## 183             1.776        49.2        65        32       1193355
## 184             1.769        46.7        94        33        847996
## 185             1.774        44.6        11        27       3063780
## 186             1.776        52.5        91        25        873140
## 187             1.790        42.7       158        35        395782
## 188             1.778        44.0        53        19       1343278
## 189             1.778        55.4        47        31       1475273
## 190             1.807        43.6        95        28        844636
## 191             1.776        43.5       201        25        151852
## 192             1.795        43.8       218        22         90699
## 193             1.761        41.9        67        27       1176435
## 194             1.757        50.9         1        29      10905167
## 195             1.775        46.9        45        29       1495982
## 196             1.751        45.3        19        30       2417685
##     AverageWinnings   leverage
## 1             23440 0.06765323
## 2            232812 0.07569896
## 3             54729 0.01220045
## 4             40419 0.03121853
## 5             16202 0.02459782
## 6             58932 0.02556188
## 7             41833 0.04866769
## 8             38406 0.03167885
## 9             25041 0.05470490
## 10            62906 0.04770781
## 11            20359 0.02889132
## 12            15727 0.04591929
## 13             6026 0.03498565
## 14            51794 0.02667187
## 15            19381 0.02271467
## 16            45481 0.03069602
## 17            37175 0.02627037
## 18            36318 0.04715286
## 19            15438 0.07102347
## 20            40638 0.01489144
## 21            26980 0.03000198
## 22            38302 0.01733760
## 23            20162 0.04470833
## 24             6664 0.06968808
## 25            38551 0.04239473
## 26            25973 0.01504469
## 27            48856 0.03469607
## 28            72422 0.03269389
## 29            80892 0.02641874
## 30            56783 0.03429403
## 31             4178 0.07928766
## 32           110068 0.02636335
## 33            56206 0.03652633
## 34            20993 0.08466298
## 35             7820 0.03123447
## 36            38345 0.04603761
## 37            23833 0.02329137
## 38            16486 0.04828451
## 39            81787 0.05598839
## 40            15694 0.05224930
## 41            13220 0.02766524
## 42            11269 0.07774519
## 43             4378 0.05698599
## 44            23129 0.03404614
## 45            14200 0.02734458
## 46            18862 0.01264314
## 47           125614 0.04822055
## 48             9787 0.01636739
## 49            15484 0.06007581
## 50              850 0.13431286
## 51             6090 0.03620472
## 52            18441 0.01579862
## 53            98230 0.03049683
## 54           128129 0.04947630
## 55            17010 0.03044149
## 56            15756 0.02572464
## 57            32240 0.08421527
## 58            10014 0.05704812
## 59            37158 0.01113865
## 60            57227 0.03251449
## 61           361702 0.05567596
## 62             3200 0.05574320
## 63            46638 0.03245205
## 64            87257 0.05010584
## 65            72542 0.05508160
## 66            52460 0.05025898
## 67             9572 0.02951163
## 68            47573 0.07161132
## 69            15756 0.04733781
## 70             8252 0.02634473
## 71            18290 0.05747809
## 72             5449 0.03961344
## 73            27230 0.10355671
## 74            57871 0.04061021
## 75            34414 0.03964263
## 76            29452 0.03332022
## 77             6004 0.05355895
## 78            27103 0.03332971
## 79            28294 0.03857441
## 80            25230 0.02897816
## 81             9660 0.01388453
## 82            19584 0.02233485
## 83            11349 0.02317171
## 84             7315 0.02318974
## 85            90071 0.05621779
## 86            20001 0.03836965
## 87            13203 0.05535820
## 88            76394 0.02380104
## 89            35987 0.03742927
## 90            86077 0.02633955
## 91            64589 0.01821352
## 92            36636 0.06807228
## 93            45105 0.02748229
## 94            49577 0.06552961
## 95            11076 0.04554186
## 96           107250 0.06629376
## 97            43714 0.05422951
## 98            24898 0.05921234
## 99            25447 0.04149314
## 100           24936 0.03642065
## 101           41969 0.04744006
## 102           67813 0.01843541
## 103           38960 0.07627636
## 104           29121 0.06870084
## 105           61241 0.01718929
## 106           56217 0.04277243
## 107           86574 0.02038899
## 108           10044 0.02250979
## 109           84871 0.03391176
## 110           21091 0.02257480
## 111            1031 0.06440164
## 112           28161 0.05783999
## 113           34398 0.02589408
## 114           65268 0.02877628
## 115            7891 0.03707119
## 116           33499 0.02383478
## 117            8548 0.05574351
## 118           45394 0.06457473
## 119           18582 0.04776536
## 120           78394 0.06834212
## 121            8519 0.04776020
## 122           29912 0.03131524
## 123           93751 0.03548708
## 124           31992 0.04552209
## 125           15806 0.05010905
## 126           17657 0.02932617
## 127           32685 0.03178440
## 128           18188 0.02443970
## 129           31531 0.03753065
## 130            9776 0.15685474
## 131          125524 0.02190023
## 132           21250 0.04356508
## 133           53072 0.09249627
## 134           12065 0.03672110
## 135           25371 0.02615576
## 136           19901 0.03807609
## 137           12350 0.05593074
## 138            9356 0.03903217
## 139           22616 0.02282782
## 140           37404 0.03035121
## 141           26149 0.03793656
## 142           29356 0.02893077
## 143          262947 0.03756535
## 144          242848 0.04965602
## 145            8600 0.04551817
## 146            8232 0.05113048
## 147           14412 0.03380865
## 148           58213 0.03199906
## 149           33335 0.02323735
## 150           23399 0.01311527
## 151           13563 0.03298612
## 152           66836 0.03068827
## 153            8363 0.02261160
## 154           10782 0.04181068
## 155           96169 0.02073970
## 156            7404 0.02248460
## 157           48253 0.02739446
## 158           18319 0.07816247
## 159           72904 0.04929838
## 160           29286 0.02015055
## 161           10610 0.06294613
## 162           98566 0.05929367
## 163          179956 0.09450444
## 164           35182 0.01505545
## 165           88527 0.02428352
## 166           41601 0.02200566
## 167           11339 0.02767923
## 168          122341 0.02388072
## 169           48607 0.03134658
## 170           19651 0.03501101
## 171           12162 0.02701870
## 172           79413 0.02176129
## 173           42544 0.03340142
## 174            8315 0.01570780
## 175           16330 0.07205770
## 176          158938 0.04749653
## 177          117969 0.01169064
## 178           34626 0.04638184
## 179           46768 0.03857345
## 180          282393 0.06301145
## 181           42623 0.03710438
## 182           66445 0.01435472
## 183           37292 0.01640281
## 184           25697 0.03562706
## 185          113473 0.02631816
## 186           34926 0.03577614
## 187           11308 0.04576552
## 188           70699 0.05330045
## 189           47589 0.03755191
## 190           30166 0.03190169
## 191            6074 0.04094986
## 192            4123 0.02177832
## 193           43572 0.03380616
## 194          376040 0.07498445
## 195           51586 0.01903929
## 196           80590 0.04742997
x_new <- c(1,35,287,64,26,1.778,48,64.9)
X=model.matrix(model_pga)
leaverage1 <- t(x_new)%*%solve(t(X)%*%X)%*%x_new
leaverage1
##             [,1]
## [1,] 0.005502717
x_new2 <- c(1,42,295,69,30,1.80,54,67.7)
leaverage2 <- t(x_new2)%*%solve(t(X)%*%X)%*%x_new2
leaverage2
##            [,1]
## [1,] 0.05782079
x_new3 <- c(1,45,320,70,30,1.80,54,67.7)
leaverage3 <- t(x_new3)%*%solve(t(X)%*%X)%*%x_new3
leaverage3
##           [,1]
## [1,] 0.3125799

Here Hmax is 0.1568 and the residual of the third prediction is greater than that hence the point is extrapolation.

  1. Obtain the standardized regression coefficients and compare the influence of all variables.

transform the data using unit normal scaling

Pga_Data <- PGA[,2:11]
Pga_Normalized=as.data.frame(apply(Pga_Data,1,function(x){(x-mean(x))/sd(x)}))
Pga_Normalized
##                            V1         V2         V3         V4         V5
## Age                -0.3293061 -0.3377119 -0.3307247 -0.3336203 -0.3280857
## AverageDrive       -0.3279773 -0.3374803 -0.3301162 -0.3325833 -0.3263990
## DrivingAccuracy    -0.3291552 -0.3376832 -0.3306517 -0.3335220 -0.3278932
## GreensonRegulation -0.3291296 -0.3376764 -0.3306527 -0.3335063 -0.3278801
## AverageNumofPutts  -0.3294126 -0.3377309 -0.3308026 -0.3337468 -0.3282765
## SavePercent        -0.3291662 -0.3376818 -0.3306844 -0.3335664 -0.3280041
## MoneyRank          -0.3288047 -0.3377264 -0.3306764 -0.3333570 -0.3273350
## NumEvents          -0.3292861 -0.3377187 -0.3307489 -0.3336753 -0.3280922
## TotalWinnings       2.8441202  2.8405020  2.8435965  2.8425164  2.8444931
## AverageWinnings    -0.2118825 -0.1390923 -0.1985389 -0.1749390 -0.2225272
##                            V6         V7         V8         V9        V10
## Age                -0.3313503 -0.3313545 -0.3291897 -0.3337642 -0.3391437
## AverageDrive       -0.3307516 -0.3305622 -0.3284069 -0.3321462 -0.3383513
## DrivingAccuracy    -0.3312571 -0.3312483 -0.3290783 -0.3335276 -0.3390912
## GreensonRegulation -0.3312613 -0.3312657 -0.3290789 -0.3335333 -0.3390821
## AverageNumofPutts  -0.3314140 -0.3314872 -0.3292701 -0.3339240 -0.3392961
## SavePercent        -0.3312990 -0.3313598 -0.3291107 -0.3336678 -0.3391414
## MoneyRank          -0.3312964 -0.3312291 -0.3290459 -0.3330412 -0.3390224
## NumEvents          -0.3313643 -0.3314172 -0.3291928 -0.3338086 -0.3392515
## TotalWinnings       2.8433772  2.8433804  2.8441152  2.8425248  2.8397451
## AverageWinnings    -0.1933833 -0.1934563 -0.2117420 -0.1751118 -0.1273654
##                           V11        V12        V13        V14        V15
## Age                -0.3276005 -0.3273296 -0.3297529 -0.3278733 -0.3280062
## AverageDrive       -0.3263766 -0.3257714 -0.3251692 -0.3273315 -0.3266961
## DrivingAccuracy    -0.3275015 -0.3271273 -0.3294134 -0.3277996 -0.3278360
## GreensonRegulation -0.3274778 -0.3271531 -0.3294094 -0.3277943 -0.3278627
## AverageNumofPutts  -0.3277926 -0.3275576 -0.3306152 -0.3279289 -0.3281930
## SavePercent        -0.3275477 -0.3272559 -0.3298251 -0.3278445 -0.3279195
## MoneyRank          -0.3271783 -0.3266867 -0.3267869 -0.3278529 -0.3274933
## NumEvents          -0.3276457 -0.3273674 -0.3301236 -0.3278713 -0.3280390
## TotalWinnings       2.8445893  2.8446829  2.8441599  2.8444821  2.8444905
## AverageWinnings    -0.2254686 -0.2284339 -0.2130642 -0.2221858 -0.2224446
##                           V16        V17        V18        V19        V20
## Age                -0.3313513 -0.3296320 -0.3286929 -0.3267055 -0.3275107
## AverageDrive       -0.3306223 -0.3288663 -0.3279730 -0.3251048 -0.3268679
## DrivingAccuracy    -0.3312727 -0.3295706 -0.3286349 -0.3266082 -0.3274382
## GreensonRegulation -0.3312718 -0.3295670 -0.3286355 -0.3265303 -0.3274380
## AverageNumofPutts  -0.3314613 -0.3297739 -0.3288216 -0.3269003 -0.3275969
## SavePercent        -0.3313307 -0.3296258 -0.3286620 -0.3265750 -0.3274772
## MoneyRank          -0.3312421 -0.3295204 -0.3285899 -0.3260831 -0.3274579
## NumEvents          -0.3313969 -0.3296944 -0.3287397 -0.3267055 -0.3275233
## TotalWinnings       2.8433792  2.8439634  2.8442517  2.8448396  2.8445832
## AverageWinnings    -0.1934300 -0.2077132 -0.2155023 -0.2336268 -0.2252730
##                           V21        V22        V23        V24        V25
## Age                -0.3275701 -0.3307815 -0.3272808 -0.3316159 -0.3278988
## AverageDrive       -0.3265866 -0.3298795 -0.3260679 -0.3264650 -0.3271928
## DrivingAccuracy    -0.3274859 -0.3306603 -0.3271244 -0.3310202 -0.3278083
## GreensonRegulation -0.3274533 -0.3306585 -0.3271406 -0.3310400 -0.3277929
## AverageNumofPutts  -0.3276961 -0.3308824 -0.3274345 -0.3322346 -0.3279817
## SavePercent        -0.3275030 -0.3307210 -0.3271864 -0.3312366 -0.3278711
## MoneyRank          -0.3273349 -0.3305915 -0.3268432 -0.3282998 -0.3277973
## NumEvents          -0.3275853 -0.3308056 -0.3272857 -0.3317946 -0.3279043
## TotalWinnings       2.8445863  2.8435997  2.8446794  2.8436502  2.8444838
## AverageWinnings    -0.2253712 -0.1986193 -0.2283160 -0.1999436 -0.2222364
##                           V26        V27        V28        V29        V30
## Age                -0.3279577 -0.3287052 -0.3291092 -0.3286620 -0.3278720
## AverageDrive       -0.3269105 -0.3280933 -0.3287008 -0.3283006 -0.3273813
## DrivingAccuracy    -0.3278254 -0.3286261 -0.3290762 -0.3286146 -0.3277988
## GreensonRegulation -0.3278234 -0.3286182 -0.3290624 -0.3286092 -0.3277955
## AverageNumofPutts  -0.3280889 -0.3287638 -0.3291695 -0.3287015 -0.3279152
## SavePercent        -0.3279036 -0.3286451 -0.3290960 -0.3286395 -0.3278275
## MoneyRank          -0.3276605 -0.3286496 -0.3291254 -0.3286704 -0.3278571
## NumEvents          -0.3279740 -0.3287029 -0.3291286 -0.3286648 -0.3278627
## TotalWinnings       2.8444872  2.8442497  2.8441116  2.8442476  2.8444816
## AverageWinnings    -0.2223432 -0.2154454 -0.2116435 -0.2153848 -0.2221716
##                           V31        V32        V33        V34        V35
## Age                -0.3322480 -0.3290965 -0.3313461 -0.3269354 -0.3272794
## AverageDrive       -0.3236597 -0.3288389 -0.3307412 -0.3257038 -0.3242379
## DrivingAccuracy    -0.3314497 -0.3290617 -0.3312705 -0.3268232 -0.3269499
## GreensonRegulation -0.3313039 -0.3290633 -0.3312688 -0.3267733 -0.3269782
## AverageNumofPutts  -0.3331732 -0.3291331 -0.3314179 -0.3270873 -0.3276998
## SavePercent        -0.3321466 -0.3290809 -0.3312955 -0.3269436 -0.3271601
## MoneyRank          -0.3263556 -0.3291221 -0.3312847 -0.3265691 -0.3255706
## NumEvents          -0.3324697 -0.3291061 -0.3313658 -0.3269445 -0.3273162
## TotalWinnings       2.8436798  2.8441103  2.8433774  2.8447611  2.8447780
## AverageWinnings    -0.2008733 -0.2116076 -0.1933868 -0.2309810 -0.2315859
##                           V36        V37        V38        V39        V40
## Age                -0.3313542 -0.3303095 -0.3280553 -0.3377447 -0.3293593
## AverageDrive       -0.3305507 -0.3289297 -0.3265490 -0.3371645 -0.3274689
## DrivingAccuracy    -0.3312574 -0.3301188 -0.3277981 -0.3376828 -0.3292290
## GreensonRegulation -0.3312927 -0.3301193 -0.3278828 -0.3376896 -0.3291646
## AverageNumofPutts  -0.3315099 -0.3304705 -0.3282748 -0.3378326 -0.3296228
## SavePercent        -0.3313096 -0.3301982 -0.3279456 -0.3377027 -0.3292582
## MoneyRank          -0.3311958 -0.3297981 -0.3273689 -0.3377034 -0.3284980
## NumEvents          -0.3314334 -0.3303468 -0.3280938 -0.3377982 -0.3294342
## TotalWinnings       2.8433813  2.8437987  2.8444931  2.8405080  2.8441277
## AverageWinnings    -0.1934777 -0.2035078 -0.2225246 -0.1391895 -0.2120927
##                           V41        V42        V43        V44        V45
## Age                -0.3295053 -0.3289573 -0.3284673 -0.3269364 -0.3288867
## AverageDrive       -0.3271695 -0.3265847 -0.3224108 -0.3258314 -0.3269727
## DrivingAccuracy    -0.3291861 -0.3287733 -0.3281282 -0.3268176 -0.3287151
## GreensonRegulation -0.3291692 -0.3287853 -0.3279131 -0.3267956 -0.3286943
## AverageNumofPutts  -0.3297382 -0.3294018 -0.3292909 -0.3270538 -0.3292235
## SavePercent        -0.3293133 -0.3287934 -0.3283644 -0.3268442 -0.3288739
## MoneyRank          -0.3283316 -0.3277604 -0.3244920 -0.3266123 -0.3279847
## NumEvents          -0.3295142 -0.3291384 -0.3286076 -0.3269240 -0.3290144
## TotalWinnings       2.8441315  2.8442713  2.8446305  2.8447600  2.8442654
## AverageWinnings    -0.2122040 -0.2160767 -0.2269564 -0.2309448 -0.2159002
##                           V46        V47        V48        V49        V50
## Age                -0.3298252 -0.3377216 -0.3282675 -0.3298128 -0.3386931
## AverageDrive       -0.3281897 -0.3373215 -0.3255571 -0.3280105 -0.2998867
## DrivingAccuracy    -0.3296382 -0.3376800 -0.3279260 -0.3296465 -0.3342847
## GreensonRegulation -0.3296317 -0.3376773 -0.3279304 -0.3296654 -0.3342397
## AverageNumofPutts  -0.3300339 -0.3377758 -0.3286264 -0.3301534 -0.3421649
## SavePercent        -0.3296958 -0.3377055 -0.3281789 -0.3296938 -0.3352893
## MoneyRank          -0.3291133 -0.3377343 -0.3268194 -0.3289456 -0.3057047
## NumEvents          -0.3298770 -0.3377532 -0.3283216 -0.3299626 -0.3386931
## TotalWinnings       2.8439729  2.8405047  2.8445039  2.8439773  2.8439426
## AverageWinnings    -0.2079681 -0.1391354 -0.2228766 -0.2080867 -0.2149864
##                           V51        V52        V53        V54        V55
## Age                -0.3299344 -0.3297686 -0.3306844 -0.3306726 -0.3269877
## AverageDrive       -0.3253432 -0.3281977 -0.3303500 -0.3304041 -0.3255852
## DrivingAccuracy    -0.3292703 -0.3296382 -0.3306488 -0.3306518 -0.3268238
## GreensonRegulation -0.3294498 -0.3296362 -0.3306419 -0.3306484 -0.3268295
## AverageNumofPutts  -0.3305757 -0.3300481 -0.3307318 -0.3307121 -0.3271699
## SavePercent        -0.3296603 -0.3297289 -0.3306592 -0.3306603 -0.3268837
## MoneyRank          -0.3268067 -0.3290867 -0.3307046 -0.3307035 -0.3264283
## NumEvents          -0.3300889 -0.3298877 -0.3307019 -0.3306891 -0.3269933
## TotalWinnings       2.8441589  2.8439734  2.8435937  2.8435928  2.8447635
## AverageWinnings    -0.2130297 -0.2079814 -0.1984711 -0.1984510 -0.2310622
##                           V56        V57        V58        V59        V60
## Age                -0.3323030 -0.3328262 -0.3318610 -0.3313875 -0.3296060
## AverageDrive       -0.3299365 -0.3316155 -0.3284761 -0.3304602 -0.3290869
## DrivingAccuracy    -0.3320913 -0.3327399 -0.3314019 -0.3312868 -0.3295493
## GreensonRegulation -0.3320611 -0.3327277 -0.3314805 -0.3312827 -0.3295484
## AverageNumofPutts  -0.3326257 -0.3330149 -0.3323182 -0.3315146 -0.3296918
## SavePercent        -0.3322379 -0.3327366 -0.3317714 -0.3313518 -0.3296075
## MoneyRank          -0.3311669 -0.3324744 -0.3298066 -0.3311794 -0.3295975
## NumEvents          -0.3324404 -0.3329247 -0.3320265 -0.3314358 -0.3296402
## TotalWinnings       2.8431506  2.8428500  2.8434138  2.8433815  2.8439604
## AverageWinnings    -0.1882878 -0.1817901 -0.1942714 -0.1934826 -0.2076327
##                           V61        V62        V63        V64        V65
## Age                -0.3376948 -0.3270331 -0.3291462 -0.3377279 -0.3282205
## AverageDrive       -0.3375504 -0.3206087 -0.3285103 -0.3371599 -0.3278828
## DrivingAccuracy    -0.3376835 -0.3263223 -0.3290665 -0.3376965 -0.3281765
## GreensonRegulation -0.3376780 -0.3265345 -0.3290711 -0.3376794 -0.3281941
## AverageNumofPutts  -0.3377131 -0.3281407 -0.3292299 -0.3378263 -0.3282902
## SavePercent        -0.3376877 -0.3267631 -0.3291315 -0.3377232 -0.3282106
## MoneyRank          -0.3377129 -0.3223774 -0.3290882 -0.3377166 -0.3282552
## NumEvents          -0.3377052 -0.3271984 -0.3291663 -0.3377940 -0.3282492
## TotalWinnings       2.8405009  2.8450124  2.8441138  2.8405077  2.8443706
## AverageWinnings    -0.1390753 -0.2400342 -0.2117038 -0.1391838 -0.2188914
##                           V66        V67        V68        V69        V70
## Age                -0.3307345 -0.3281980 -0.3296631 -0.3269834 -0.3287120
## AverageDrive       -0.3300843 -0.3255657 -0.3289542 -0.3254759 -0.3254192
## DrivingAccuracy    -0.3306700 -0.3279306 -0.3295702 -0.3268211 -0.3284547
## GreensonRegulation -0.3306478 -0.3279770 -0.3295607 -0.3268443 -0.3284096
## AverageNumofPutts  -0.3308057 -0.3286424 -0.3297279 -0.3272107 -0.3292184
## SavePercent        -0.3306994 -0.3281903 -0.3295759 -0.3269315 -0.3286616
## MoneyRank          -0.3306614 -0.3267835 -0.3295759 -0.3263794 -0.3268554
## NumEvents          -0.3307496 -0.3283306 -0.3296657 -0.3270200 -0.3288578
## TotalWinnings       2.8435967  2.8445042  2.8439617  2.8447645  2.8444003
## AverageWinnings    -0.1985440 -0.2228862 -0.2076683 -0.2310981 -0.2198115
##                           V71        V72        V73        V74        V75
## Age                -0.3322939 -0.3316490 -0.3279708 -0.3301543 -0.3275464
## AverageDrive       -0.3302711 -0.3257935 -0.3268623 -0.3295712 -0.3268027
## DrivingAccuracy    -0.3320516 -0.3310102 -0.3278896 -0.3300856 -0.3274236
## GreensonRegulation -0.3320603 -0.3311560 -0.3278391 -0.3300836 -0.3274361
## AverageNumofPutts  -0.3325249 -0.3325765 -0.3280765 -0.3302229 -0.3276303
## SavePercent        -0.3320832 -0.3315883 -0.3278531 -0.3301133 -0.3274741
## MoneyRank          -0.3313073 -0.3275688 -0.3276989 -0.3301214 -0.3274215
## NumEvents          -0.3323649 -0.3320376 -0.3279669 -0.3301718 -0.3275434
## TotalWinnings       2.8431464  2.8436621  2.8444868  2.8437892  2.8445842
## AverageWinnings    -0.1881892 -0.2002824 -0.2223296 -0.2032652 -0.2253063
##                           V76        V77        V78        V79        V80
## Age                -0.3292188 -0.3299922 -0.3279866 -0.3279565 -0.3271997
## AverageDrive       -0.3282291 -0.3251611 -0.3269292 -0.3269388 -0.3262399
## DrivingAccuracy    -0.3290620 -0.3292559 -0.3278297 -0.3278239 -0.3271153
## GreensonRegulation -0.3290867 -0.3294557 -0.3278239 -0.3278160 -0.3271141
## AverageNumofPutts  -0.3293434 -0.3306028 -0.3280655 -0.3280582 -0.3273657
## SavePercent        -0.3291845 -0.3297788 -0.3278937 -0.3279091 -0.3271797
## MoneyRank          -0.3289355 -0.3267415 -0.3276822 -0.3277173 -0.3269719
## NumEvents          -0.3292428 -0.3301097 -0.3279554 -0.3279528 -0.3272469
## TotalWinnings       2.8441178  2.8441598  2.8444865  2.8444863  2.8446772
## AverageWinnings    -0.2118150 -0.2130621 -0.2223203 -0.2223136 -0.2282441
##                           V81        V82        V83        V84        V85
## Age                -0.3295501 -0.3284364 -0.3291220 -0.3301911 -0.3312857
## AverageDrive       -0.3266086 -0.3269709 -0.3264884 -0.3261044 -0.3309432
## DrivingAccuracy    -0.3292008 -0.3282420 -0.3287675 -0.3298889 -0.3312636
## GreensonRegulation -0.3292507 -0.3282364 -0.3287395 -0.3298488 -0.3312613
## AverageNumofPutts  -0.3300031 -0.3285997 -0.3293738 -0.3308956 -0.3313611
## SavePercent        -0.3294625 -0.3283749 -0.3288673 -0.3300692 -0.3312779
## MoneyRank          -0.3279071 -0.3278777 -0.3277538 -0.3277037 -0.3313225
## NumEvents          -0.3296961 -0.3284476 -0.3291120 -0.3304916 -0.3313286
## TotalWinnings       2.8441404  2.8443807  2.8442701  2.8440024  2.8433750
## AverageWinnings    -0.2124613 -0.2191952 -0.2160459 -0.2088091 -0.1933312
##                           V86        V87        V88        V89        V90
## Age                -0.3269447 -0.3267192 -0.3335285 -0.3286872 -0.3282270
## AverageDrive       -0.3257380 -0.3249535 -0.3330271 -0.3279547 -0.3279218
## DrivingAccuracy    -0.3267895 -0.3265051 -0.3334678 -0.3286213 -0.3281858
## GreensonRegulation -0.3268082 -0.3265411 -0.3334714 -0.3286185 -0.3281888
## AverageNumofPutts  -0.3271140 -0.3269961 -0.3336080 -0.3288296 -0.3282730
## SavePercent        -0.3268520 -0.3266810 -0.3335088 -0.3286906 -0.3282082
## MoneyRank          -0.3265459 -0.3259561 -0.3335223 -0.3285927 -0.3282537
## NumEvents          -0.3269639 -0.3267686 -0.3335701 -0.3287470 -0.3282384
## TotalWinnings       2.8447618  2.8448422  2.8425098  2.8442520  2.8443699
## AverageWinnings    -0.2310056 -0.2337216 -0.1748059 -0.2155105 -0.2188733
##                           V91        V92        V93        V94        V95
## Age                -0.3307012 -0.3296574 -0.3271623 -0.3274724 -0.3348736
## AverageDrive       -0.3301915 -0.3288337 -0.3265936 -0.3269657 -0.3315033
## DrivingAccuracy    -0.3306582 -0.3295404 -0.3270935 -0.3274320 -0.3344749
## GreensonRegulation -0.3306457 -0.3295464 -0.3270909 -0.3274278 -0.3345791
## AverageNumofPutts  -0.3307775 -0.3297847 -0.3272244 -0.3275636 -0.3355563
## SavePercent        -0.3306748 -0.3296517 -0.3271234 -0.3274949 -0.3348283
## MoneyRank          -0.3306992 -0.3295208 -0.3271205 -0.3274827 -0.3327294
## NumEvents          -0.3307319 -0.3297040 -0.3271579 -0.3275034 -0.3352964
## TotalWinnings       2.8435955  2.8439638  2.8446730  2.8445821  2.8421772
## AverageWinnings    -0.1985153 -0.2077247 -0.2281065 -0.2252396 -0.1683359
##                           V96        V97        V98        V99       V100
## Age                -0.3319718 -0.3335797 -0.3367047 -0.3283764 -0.3288040
## AverageDrive       -0.3316112 -0.3326955 -0.3348726 -0.3272684 -0.3276060
## DrivingAccuracy    -0.3319516 -0.3334965 -0.3365515 -0.3282040 -0.3286558
## GreensonRegulation -0.3319336 -0.3334860 -0.3365087 -0.3282324 -0.3286336
## AverageNumofPutts  -0.3320206 -0.3337294 -0.3369993 -0.3284935 -0.3289458
## SavePercent        -0.3319492 -0.3335329 -0.3367205 -0.3283029 -0.3287240
## MoneyRank          -0.3319947 -0.3334090 -0.3358637 -0.3280325 -0.3284359
## NumEvents          -0.3319934 -0.3336633 -0.3368849 -0.3283764 -0.3288267
## TotalWinnings       2.8431247  2.8425156  2.8411656  2.8443773  2.8442559
## AverageWinnings    -0.1876985 -0.1749234 -0.1500596 -0.2190906 -0.2156242
##                          V101       V102       V103       V104       V105
## Age                -0.3291858 -0.3301357 -0.3336075 -0.3366742 -0.3301485
## AverageDrive       -0.3284302 -0.3296547 -0.3326357 -0.3351354 -0.3296283
## DrivingAccuracy    -0.3290847 -0.3300782 -0.3334718 -0.3365522 -0.3300751
## GreensonRegulation -0.3290866 -0.3300748 -0.3335166 -0.3365169 -0.3300778
## AverageNumofPutts  -0.3292536 -0.3301959 -0.3337675 -0.3369069 -0.3302111
## SavePercent        -0.3291017 -0.3301203 -0.3335231 -0.3365894 -0.3301029
## MoneyRank          -0.3290625 -0.3301357 -0.3333426 -0.3360065 -0.3301277
## NumEvents          -0.3291830 -0.3301525 -0.3336931 -0.3368090 -0.3301630
## TotalWinnings       2.8441146  2.8437882  2.8425174  2.8411606  2.8437888
## AverageWinnings    -0.2117265 -0.2032404 -0.1749594 -0.1499701 -0.2032545
##                          V106       V107       V108       V109       V110
## Age                -0.3320433 -0.3306912 -0.3282426 -0.3312992 -0.3272605
## AverageDrive       -0.3313586 -0.3303078 -0.3256172 -0.3308895 -0.3260883
## DrivingAccuracy    -0.3319471 -0.3306497 -0.3279898 -0.3312691 -0.3271063
## GreensonRegulation -0.3319311 -0.3306425 -0.3279593 -0.3312592 -0.3271176
## AverageNumofPutts  -0.3321004 -0.3307405 -0.3285924 -0.3313679 -0.3274260
## SavePercent        -0.3319781 -0.3306732 -0.3281067 -0.3312963 -0.3272158
## MoneyRank          -0.3319458 -0.3307035 -0.3268630 -0.3313219 -0.3268751
## NumEvents          -0.3320485 -0.3307065 -0.3282952 -0.3313333 -0.3272840
## TotalWinnings       2.8431281  2.8435940  2.8445027  2.8433753  2.8446791
## AverageWinnings    -0.1877751 -0.1984791 -0.2228365 -0.1933390 -0.2283055
##                          V111       V112       V113       V114       V115
## Age                -0.3408664 -0.3272511 -0.3291722 -0.3306954 -0.3303093
## AverageDrive       -0.3022003 -0.3263391 -0.3283313 -0.3302149 -0.3261608
## DrivingAccuracy    -0.3367304 -0.3270832 -0.3290796 -0.3306344 -0.3298760
## GreensonRegulation -0.3362889 -0.3271018 -0.3290936 -0.3306433 -0.3298296
## AverageNumofPutts  -0.3447193 -0.3273188 -0.3293028 -0.3307770 -0.3307610
## SavePercent        -0.3380698 -0.3271501 -0.3291254 -0.3306806 -0.3301406
## MoneyRank          -0.3090740 -0.3270188 -0.3290185 -0.3307035 -0.3278490
## NumEvents          -0.3418967 -0.3272124 -0.3292167 -0.3307319 -0.3303867
## TotalWinnings       2.8430835  2.8446759  2.8441164  2.8435955  2.8439979
## AverageWinnings    -0.1932378 -0.2282007 -0.2117763 -0.1985144 -0.2086848
##                          V116       V117       V118       V119       V120
## Age                -0.3301982 -0.3307246 -0.3320017 -0.3280898 -0.3327405
## AverageDrive       -0.3292654 -0.3271440 -0.3313019 -0.3265053 -0.3322528
## DrivingAccuracy    -0.3301140 -0.3302760 -0.3319356 -0.3278656 -0.3326583
## GreensonRegulation -0.3300928 -0.3303963 -0.3319458 -0.3278479 -0.3326587
## AverageNumofPutts  -0.3303430 -0.3312477 -0.3321520 -0.3282219 -0.3327891
## SavePercent        -0.3301546 -0.3303800 -0.3319690 -0.3279566 -0.3326919
## MoneyRank          -0.3299859 -0.3284812 -0.3319095 -0.3274694 -0.3327251
## NumEvents          -0.3302550 -0.3309029 -0.3320876 -0.3280613 -0.3327521
## TotalWinnings       2.8437939  2.8438272  2.8431305  2.8444914  2.8428398
## AverageWinnings    -0.2033851 -0.2042745 -0.1878275 -0.2224735 -0.1815713
##                          V121       V122       V123       V124       V125
## Age                -0.3278486 -0.3307800 -0.3282294 -0.3366076 -0.3348686
## AverageDrive       -0.3250755 -0.3296864 -0.3279358 -0.3352876 -0.3322014
## DrivingAccuracy    -0.3275626 -0.3306893 -0.3281889 -0.3364907 -0.3344242
## GreensonRegulation -0.3276467 -0.3306911 -0.3281941 -0.3365170 -0.3344570
## AverageNumofPutts  -0.3283437 -0.3309668 -0.3282659 -0.3368719 -0.3351671
## SavePercent        -0.3278426 -0.3307433 -0.3282049 -0.3365684 -0.3346771
## MoneyRank          -0.3262866 -0.3304793 -0.3282504 -0.3360934 -0.3334191
## NumEvents          -0.3279928 -0.3308684 -0.3282341 -0.3367829 -0.3349850
## TotalWinnings       2.8446054  2.8436030  2.8443697  2.8411588  2.8421585
## AverageWinnings    -0.2260063 -0.1986983 -0.2188661 -0.1499393 -0.1679590
##                          V126       V127       V128       V129       V130
## Age                -0.3273097 -0.3302276 -0.3289155 -0.3287071 -0.3372788
## AverageDrive       -0.3258606 -0.3292464 -0.3272872 -0.3278226 -0.3321480
## DrivingAccuracy    -0.3271721 -0.3300897 -0.3286762 -0.3286657 -0.3367872
## GreensonRegulation -0.3271457 -0.3301103 -0.3286706 -0.3286381 -0.3367853
## AverageNumofPutts  -0.3274904 -0.3303490 -0.3290663 -0.3288625 -0.3379524
## SavePercent        -0.3272541 -0.3301487 -0.3287871 -0.3286930 -0.3373783
## MoneyRank          -0.3267595 -0.3299751 -0.3282113 -0.3285525 -0.3342562
## NumEvents          -0.3273209 -0.3302587 -0.3289030 -0.3287682 -0.3376615
## TotalWinnings       2.8446809  2.8437941  2.8442600  2.8442531  2.8412147
## AverageWinnings    -0.2283680 -0.2033886 -0.2157427 -0.2155435 -0.1509669
##                          V131       V132       V133       V134       V135
## Age                -0.3319681 -0.3269044 -0.3391662 -0.3324695 -0.3314900
## AverageDrive       -0.3316829 -0.3257754 -0.3382645 -0.3293931 -0.3301090
## DrivingAccuracy    -0.3319335 -0.3268338 -0.3390812 -0.3321153 -0.3312859
## GreensonRegulation -0.3319324 -0.3267994 -0.3391179 -0.3321165 -0.3313039
## AverageNumofPutts  -0.3320052 -0.3270863 -0.3393470 -0.3328308 -0.3316544
## SavePercent        -0.3319455 -0.3268573 -0.3391195 -0.3323654 -0.3314236
## MoneyRank          -0.3319911 -0.3265832 -0.3389426 -0.3307943 -0.3309622
## NumEvents          -0.3319819 -0.3269451 -0.3392940 -0.3325891 -0.3315389
## TotalWinnings       2.8431240  2.8447610  2.8397484  2.8431589  2.8433873
## AverageWinnings    -0.1876835 -0.2309761 -0.1274154 -0.1884850 -0.1936193
##                          V136       V137       V138       V139       V140
## Age                -0.3279651 -0.3290003 -0.3275388 -0.3272815 -0.3268427
## AverageDrive       -0.3267062 -0.3268326 -0.3249903 -0.3261270 -0.3261867
## DrivingAccuracy    -0.3278136 -0.3286598 -0.3271690 -0.3271193 -0.3267707
## GreensonRegulation -0.3278381 -0.3287562 -0.3272072 -0.3271140 -0.3267658
## AverageNumofPutts  -0.3281948 -0.3293141 -0.3278906 -0.3273964 -0.3269281
## SavePercent        -0.3279502 -0.3288094 -0.3274329 -0.3271802 -0.3268221
## MoneyRank          -0.3275293 -0.3278348 -0.3261294 -0.3269177 -0.3267707
## NumEvents          -0.3280448 -0.3290738 -0.3275706 -0.3272639 -0.3268478
## TotalWinnings       2.8444906  2.8442683  2.8446925  2.8446782  2.8447564
## AverageWinnings    -0.2224484 -0.2159873 -0.2287636 -0.2282783 -0.2308218
##                          V141       V142       V143       V144       V145
## Age                -0.3314202 -0.3314316 -0.3319529 -0.3377027 -0.3302504
## AverageDrive       -0.3301474 -0.3302353 -0.3318095 -0.3374907 -0.3265007
## DrivingAccuracy    -0.3313484 -0.3313164 -0.3319371 -0.3376802 -0.3298245
## GreensonRegulation -0.3313199 -0.3313098 -0.3319334 -0.3376751 -0.3297478
## AverageNumofPutts  -0.3316433 -0.3315970 -0.3319706 -0.3377299 -0.3306366
## SavePercent        -0.3313795 -0.3313841 -0.3319406 -0.3376867 -0.3301610
## MoneyRank          -0.3309873 -0.3310507 -0.3319699 -0.3377264 -0.3280213
## NumEvents          -0.3315311 -0.3314974 -0.3319595 -0.3377182 -0.3302930
## TotalWinnings       2.8433869  2.8433849  2.8431225  2.8405020  2.8439936
## AverageWinnings    -0.1936098 -0.1935627 -0.1876489 -0.1390920 -0.2085584
##                          V146       V147       V148       V149       V150
## Age                -0.3292679 -0.3274163 -0.3296245 -0.3287398 -0.3275922
## AverageDrive       -0.3256505 -0.3256595 -0.3290753 -0.3279062 -0.3264896
## DrivingAccuracy    -0.3288865 -0.3271322 -0.3295574 -0.3286106 -0.3274645
## GreensonRegulation -0.3288589 -0.3271653 -0.3295463 -0.3286317 -0.3274623
## AverageNumofPutts  -0.3297111 -0.3275968 -0.3296899 -0.3288425 -0.3277419
## SavePercent        -0.3289595 -0.3272595 -0.3295962 -0.3286806 -0.3275384
## MoneyRank          -0.3272162 -0.3265909 -0.3296014 -0.3285630 -0.3272686
## NumEvents          -0.3293505 -0.3273888 -0.3296392 -0.3287534 -0.3276141
## TotalWinnings       2.8442809  2.8446841  2.8439602  2.8442525  2.8445877
## AverageWinnings    -0.2163798 -0.2284748 -0.2076300 -0.2155246 -0.2254162
##                          V151       V152       V153       V154       V155
## Age                -0.3348341 -0.3296100 -0.3293013 -0.3319219 -0.3295979
## AverageDrive       -0.3318452 -0.3291405 -0.3256579 -0.3285143 -0.3292625
## DrivingAccuracy    -0.3344778 -0.3295647 -0.3288920 -0.3314378 -0.3295583
## GreensonRegulation -0.3345320 -0.3295532 -0.3288378 -0.3313969 -0.3295510
## AverageNumofPutts  -0.3353175 -0.3296707 -0.3296701 -0.3322445 -0.3296311
## SavePercent        -0.3347848 -0.3295664 -0.3290262 -0.3317260 -0.3295713
## MoneyRank          -0.3331695 -0.3296173 -0.3272411 -0.3300010 -0.3296131
## NumEvents          -0.3351054 -0.3296264 -0.3293149 -0.3319731 -0.3296004
## TotalWinnings       2.8421654  2.8439595  2.8442794  2.8434107  2.8439581
## AverageWinnings    -0.1680993 -0.2076103 -0.2163382 -0.1941952 -0.2075723
##                          V156       V157       V158       V159       V160
## Age                -0.3306800 -0.3268344 -0.3284630 -0.3364966 -0.3292047
## AverageDrive       -0.3266609 -0.3263014 -0.3267811 -0.3359033 -0.3281809
## DrivingAccuracy    -0.3303472 -0.3267643 -0.3283250 -0.3364459 -0.3291007
## GreensonRegulation -0.3303781 -0.3267598 -0.3282736 -0.3364464 -0.3290987
## AverageNumofPutts  -0.3314384 -0.3268867 -0.3286373 -0.3366177 -0.3293541
## SavePercent        -0.3306852 -0.3267880 -0.3283555 -0.3364941 -0.3291617
## MoneyRank          -0.3281413 -0.3268165 -0.3278358 -0.3364684 -0.3289398
## NumEvents          -0.3310403 -0.3268245 -0.3284749 -0.3365787 -0.3292529
## TotalWinnings       2.8438339  2.8447552  2.8443820  2.8411446  2.8441182
## AverageWinnings    -0.2044625 -0.2307794 -0.2192358 -0.1496936 -0.2118246
##                          V161       V162       V163       V164       V165
## Age                -0.3358901 -0.3306800 -0.3353865 -0.3291819 -0.3295928
## AverageDrive       -0.3320673 -0.3303607 -0.3351206 -0.3283383 -0.3292549
## DrivingAccuracy    -0.3355289 -0.3306303 -0.3353527 -0.3290880 -0.3295533
## GreensonRegulation -0.3356737 -0.3306418 -0.3353406 -0.3290750 -0.3295520
## AverageNumofPutts  -0.3366756 -0.3307314 -0.3354083 -0.3292928 -0.3296387
## SavePercent        -0.3358534 -0.3306705 -0.3353629 -0.3291411 -0.3295730
## MoneyRank          -0.3335102 -0.3307069 -0.3354012 -0.3290249 -0.3296094
## NumEvents          -0.3364060 -0.3307015 -0.3353924 -0.3292086 -0.3296052
## TotalWinnings       2.8417362  2.8435936  2.8416712  2.8441160  2.8439583
## AverageWinnings    -0.1601310 -0.1984706 -0.1589060 -0.2117655 -0.2075791
##                          V166       V167       V168       V169       V170
## Age                -0.3282662 -0.3271102 -0.3290914 -0.3307368 -0.3269731
## AverageDrive       -0.3276316 -0.3250290 -0.3288532 -0.3300638 -0.3256515
## DrivingAccuracy    -0.3281920 -0.3268466 -0.3290674 -0.3306557 -0.3268347
## GreensonRegulation -0.3282065 -0.3268652 -0.3290641 -0.3306557 -0.3267980
## AverageNumofPutts  -0.3283668 -0.3274001 -0.3291281 -0.3308271 -0.3271160
## SavePercent        -0.3282444 -0.3270271 -0.3290775 -0.3306815 -0.3268856
## MoneyRank          -0.3282031 -0.3260675 -0.3291221 -0.3306470 -0.3265329
## NumEvents          -0.3282951 -0.3271357 -0.3291039 -0.3307667 -0.3269634
## TotalWinnings       2.8443731  2.8447699  2.8441101  2.8435975  2.8447618
## AverageWinnings    -0.2189674 -0.2312886 -0.2116024 -0.1985632 -0.2310066
##                          V171       V172       V173       V174       V175
## Age                -0.3339760 -0.3274649 -0.3286779 -0.3312527 -0.3293358
## AverageDrive       -0.3307746 -0.3271519 -0.3280259 -0.3274258 -0.3275737
## DrivingAccuracy    -0.3336338 -0.3274278 -0.3286398 -0.3309058 -0.3292228
## GreensonRegulation -0.3336612 -0.3274278 -0.3286249 -0.3309011 -0.3291753
## AverageNumofPutts  -0.3345011 -0.3275103 -0.3287904 -0.3319083 -0.3295896
## SavePercent        -0.3338845 -0.3274494 -0.3286785 -0.3311652 -0.3292508
## MoneyRank          -0.3321865 -0.3274894 -0.3286193 -0.3288977 -0.3285152
## NumEvents          -0.3342633 -0.3274726 -0.3287206 -0.3315550 -0.3294078
## TotalWinnings       2.8425512  2.8445804  2.8442507  2.8436390  2.8441264
## AverageWinnings    -0.1756701 -0.2251864 -0.2154733 -0.1996272 -0.2120555
##                          V176       V177       V178       V179       V180
## Age                -0.3286387 -0.3301122 -0.3355697 -0.3262314 -0.3343857
## AverageDrive       -0.3284537 -0.3298322 -0.3341881 -0.3257312 -0.3342235
## DrivingAccuracy    -0.3286189 -0.3300805 -0.3354351 -0.3261556 -0.3343690
## GreensonRegulation -0.3286135 -0.3300777 -0.3353953 -0.3261609 -0.3343627
## AverageNumofPutts  -0.3286596 -0.3301458 -0.3357137 -0.3262880 -0.3344012
## SavePercent        -0.3286208 -0.3300924 -0.3354708 -0.3262012 -0.3343706
## MoneyRank          -0.3286572 -0.3301338 -0.3350854 -0.3262217 -0.3343999
## NumEvents          -0.3286408 -0.3301208 -0.3356309 -0.3262236 -0.3343910
## TotalWinnings       2.8442461  2.8437863  2.8416872  2.8448994  2.8421206
## AverageWinnings    -0.2153429 -0.2031908 -0.1591982 -0.2356858 -0.1672170
##                          V181       V182       V183       V184       V185
## Age                -0.3296684 -0.3296095 -0.3271647 -0.3268889 -0.3290912
## AverageDrive       -0.3289502 -0.3291322 -0.3265024 -0.3259722 -0.3288380
## DrivingAccuracy    -0.3295424 -0.3295654 -0.3270967 -0.3267891 -0.3290708
## GreensonRegulation -0.3295602 -0.3295524 -0.3270972 -0.3267808 -0.3290667
## AverageNumofPutts  -0.3297436 -0.3296687 -0.3272610 -0.3270132 -0.3291298
## SavePercent        -0.3295960 -0.3295842 -0.3271350 -0.3268452 -0.3290854
## MoneyRank          -0.3295453 -0.3296132 -0.3270930 -0.3266683 -0.3291202
## NumEvents          -0.3296742 -0.3296242 -0.3271807 -0.3268964 -0.3291036
## TotalWinnings       2.8439622  2.8439595  2.8446742  2.8447589  2.8441102
## AverageWinnings    -0.2076819 -0.2076097 -0.2281435 -0.2309048 -0.2116045
##                          V186       V187       V188       V189       V190
## Age                -0.3301771 -0.3264943 -0.3344177 -0.3274812 -0.3287143
## AverageDrive       -0.3293460 -0.3244067 -0.3338449 -0.3269630 -0.3277920
## DrivingAccuracy    -0.3300655 -0.3263412 -0.3343593 -0.3274313 -0.3286490
## GreensonRegulation -0.3301054 -0.3262787 -0.3343553 -0.3274344 -0.3286418
## AverageNumofPutts  -0.3303306 -0.3267684 -0.3345199 -0.3275742 -0.3288766
## SavePercent        -0.3301462 -0.3264406 -0.3344201 -0.3274589 -0.3287196
## MoneyRank          -0.3300062 -0.3255166 -0.3343988 -0.3274769 -0.3285265
## NumEvents          -0.3302461 -0.3265023 -0.3344792 -0.3275113 -0.3287782
## TotalWinnings       2.8437934  2.8449124  2.8421266  2.8445825  2.8442536
## AverageWinnings    -0.2033703 -0.2361634 -0.1673316 -0.2252512 -0.2155555
##                          V191       V192       V193       V194       V195
## Age                -0.3309581 -0.3335532 -0.3291737 -0.3282025 -0.3282505
## AverageDrive       -0.3257342 -0.3247864 -0.3284602 -0.3281269 -0.3277175
## DrivingAccuracy    -0.3306235 -0.3326527 -0.3290736 -0.3281968 -0.3282011
## GreensonRegulation -0.3304583 -0.3326387 -0.3290647 -0.3281932 -0.3281909
## AverageNumofPutts  -0.3317156 -0.3347518 -0.3292445 -0.3282139 -0.3283316
## SavePercent        -0.3308431 -0.3332799 -0.3291362 -0.3281996 -0.3282359
## MoneyRank          -0.3275494 -0.3271761 -0.3290685 -0.3282141 -0.3282399
## NumEvents          -0.3312299 -0.3340438 -0.3291764 -0.3282060 -0.3282738
## TotalWinnings       2.8438426  2.8432295  2.8441143  2.8443679  2.8443719
## AverageWinnings    -0.2047306 -0.1903470 -0.2117164 -0.2188151 -0.2189308
##                          V196
## Age                -0.3278463
## AverageDrive       -0.3275083
## DrivingAccuracy    -0.3277887
## GreensonRegulation -0.3277940
## AverageNumofPutts  -0.3278808
## SavePercent        -0.3278236
## MoneyRank          -0.3278581
## NumEvents          -0.3278437
## TotalWinnings       2.8444805
## AverageWinnings    -0.2221370

#redo regression

model1_Pga_Normalized <- lm(PGA$AverageWinnings ~ PGA$Age+PGA$AverageDrive+PGA$DrivingAccuracy+PGA$GreensonRegulation+PGA$AverageNumofPutts+PGA$SavePercent+PGA$NumEvents, data=Pga_Normalized)
model1_Pga_Normalized
## 
## Call:
## lm(formula = PGA$AverageWinnings ~ PGA$Age + PGA$AverageDrive + 
##     PGA$DrivingAccuracy + PGA$GreensonRegulation + PGA$AverageNumofPutts + 
##     PGA$SavePercent + PGA$NumEvents, data = Pga_Normalized)
## 
## Coefficients:
##            (Intercept)                 PGA$Age        PGA$AverageDrive  
##              945579.88                 -587.13                  -94.76  
##    PGA$DrivingAccuracy  PGA$GreensonRegulation   PGA$AverageNumofPutts  
##               -2360.57                 8466.04              -694226.49  
##        PGA$SavePercent           PGA$NumEvents  
##                1395.67                -3159.22
summary(model1_Pga_Normalized)
## 
## Call:
## lm(formula = PGA$AverageWinnings ~ PGA$Age + PGA$AverageDrive + 
##     PGA$DrivingAccuracy + PGA$GreensonRegulation + PGA$AverageNumofPutts + 
##     PGA$SavePercent + PGA$NumEvents, data = Pga_Normalized)
## 
## Residuals:
##    Min     1Q Median     3Q    Max 
## -71690 -22176  -6735  17147 247928 
## 
## Coefficients:
##                          Estimate Std. Error t value Pr(>|t|)    
## (Intercept)             945579.88  305886.59   3.091  0.00230 ** 
## PGA$Age                   -587.13     519.32  -1.131  0.25968    
## PGA$AverageDrive           -94.76     567.42  -0.167  0.86755    
## PGA$DrivingAccuracy      -2360.57     854.02  -2.764  0.00628 ** 
## PGA$GreensonRegulation    8466.04    1303.87   6.493 7.30e-10 ***
## PGA$AverageNumofPutts  -694226.49  138155.99  -5.025 1.17e-06 ***
## PGA$SavePercent           1395.67     587.54   2.375  0.01853 *  
## PGA$NumEvents            -3159.22     644.24  -4.904 2.03e-06 ***
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## Residual standard error: 41430 on 188 degrees of freedom
## Multiple R-squared:  0.4527, Adjusted R-squared:  0.4323 
## F-statistic: 22.21 on 7 and 188 DF,  p-value: < 2.2e-16
summary(model_pga)
## 
## Call:
## lm(formula = AverageWinnings ~ Age + AverageDrive + DrivingAccuracy + 
##     NumEvents + AverageNumofPutts + SavePercent + GreensonRegulation, 
##     data = PGA)
## 
## Residuals:
##    Min     1Q Median     3Q    Max 
## -71690 -22176  -6735  17147 247928 
## 
## Coefficients:
##                      Estimate Std. Error t value Pr(>|t|)    
## (Intercept)         945579.88  305886.59   3.091  0.00230 ** 
## Age                   -587.13     519.32  -1.131  0.25968    
## AverageDrive           -94.76     567.42  -0.167  0.86755    
## DrivingAccuracy      -2360.57     854.02  -2.764  0.00628 ** 
## NumEvents            -3159.22     644.24  -4.904 2.03e-06 ***
## AverageNumofPutts  -694226.49  138155.99  -5.025 1.17e-06 ***
## SavePercent           1395.67     587.54   2.375  0.01853 *  
## GreensonRegulation    8466.04    1303.87   6.493 7.30e-10 ***
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## Residual standard error: 41430 on 188 degrees of freedom
## Multiple R-squared:  0.4527, Adjusted R-squared:  0.4323 
## F-statistic: 22.21 on 7 and 188 DF,  p-value: < 2.2e-16

Average No if Putts and greens on regulation affect the averagewinning the most after the variables in the model are standardized.

  1. Obtain the residuals of the fitted regression. Perform the residual analysis. What does the residual analysis tell you? For example, are all four assumptions satisfied? If not, which ones are not satisfied. Suppose you take a logarithm of the response variable and fit the regression, does that help with the residuals?
model_pga$residuals
##           1           2           3           4           5           6 
##  -7763.9747  97689.0095  18807.2522 -13861.9772  -9996.6673 -10123.5373 
##           7           8           9          10          11          12 
## -10593.3840 -37173.6736  -2773.3291 -18942.3176 -20839.4118  27672.1374 
##          13          14          15          16          17          18 
##   6716.3936  -6323.1582   2725.7362 -14906.6410   4107.5204  -3653.2150 
##          19          20          21          22          23          24 
## -45992.2552   8699.3642 -32095.3714 -35056.5710 -13121.5366  15249.8967 
##          25          26          27          28          29          30 
## -33339.7647 -24059.8661 -37421.4212  11044.5512  30938.3846  22924.2846 
##          31          32          33          34          35          36 
##  -1724.2369  36729.1197  -1490.0068 -15622.6725  37749.1317   4362.8128 
##          37          38          39          40          41          42 
## -42754.7836  28856.1308  41657.2840 -10844.6481 -21974.1088  -4259.7446 
##          43          44          45          46          47          48 
##  -9257.9100 -34539.0808 -31703.1139 -45557.6648  31286.8330 -10083.6707 
##          49          50          51          52          53          54 
## -11745.0047  56807.9479  18445.9081 -18721.6214 -10321.2893  59960.8572 
##          55          56          57          58          59          60 
##  -8555.3835 -34093.4117 -38398.3564  36324.2744  -7269.3055  -5590.4775 
##          61          62          63          64          65          66 
## 232199.2639  47168.6227   6947.4691  -5262.6742  52121.0984 -32741.4274 
##          67          68          69          70          71          72 
##  23037.6870 -57314.2402   3999.9073   7676.3741 -62050.8333  29050.8108 
##          73          74          75          76          77          78 
## -48928.0964 -19887.4571  -3343.6799   3901.8448  51215.7962  -7146.9241 
##          79          80          81          82          83          84 
##  -5434.5448  -8989.9523 -11286.3346 -22873.0401 -38276.7524 -26465.1308 
##          85          86          87          88          89          90 
##   3265.3484  -8021.1939  26322.9736   8910.1620 -19645.6910  21502.2450 
##          91          92          93          94          95          96 
## -24251.3500 -29365.3351  12970.9630  47369.3486 -38816.9649 -25859.1838 
##          97          98          99         100         101         102 
## -38830.2985 -62455.8766   9942.7136 -53967.5365  -4558.1357  31272.7256 
##         103         104         105         106         107         108 
## -21836.0891 -68733.7925  -7544.2305 -51916.3028  15199.1644  -5701.3114 
##         109         110         111         112         113         114 
##   1616.8938 -12325.7656  -2154.7779  10860.3905  23713.4904  -8858.4922 
##         115         116         117         118         119         120 
##   2057.3635 -45133.3295   8338.2777 -51681.1838 -28254.4647 -11216.9956 
##         121         122         123         124         125         126 
##  49603.4630 -24508.8090  41242.9350 -24949.7821 -64606.1785  19828.5734 
##         127         128         129         130         131         132 
## -21016.6829 -16156.4183 -26059.0851 -16828.4227  35569.8657 -20516.1260 
##         133         134         135         136         137         138 
##   -595.7606   3890.8253 -30281.2924 -22037.1769  24101.4668   4118.3974 
##         139         140         141         142         143         144 
## -20425.7380   4537.9770 -52040.9725  15498.7974 137343.9149  95996.1593 
##         145         146         147         148         149         150 
## -17720.0318 -13839.7705 -19699.4015 -16311.3946  21483.9410 -18829.6178 
##         151         152         153         154         155         156 
## -23783.0006 -25101.2803 -20795.4087 -43026.8762  42963.4547 -10106.8893 
##         157         158         159         160         161         162 
##   1835.8322  -5548.3888 -11886.5715 -19900.7317  -2777.1531  25013.4668 
##         163         164         165         166         167         168 
##  47529.0397 -16705.4165  18814.8420  27237.8741  19402.2220  29490.7733 
##         169         170         171         172         173         174 
##   6413.2172 -22592.4810 -38539.1967  33810.3306   2220.9333 -27671.1562 
##         175         176         177         178         179         180 
## -29840.6902  41821.4188  47803.7822 -71689.6767  15280.5052 130114.7662 
##         181         182         183         184         185         186 
## -14835.7644  10452.0349  19998.4811   -959.9942  80010.9178  16713.9600 
##         187         188         189         190         191         192 
##   6158.3642 -28237.4473   5941.8382  23542.8129 -35284.3437 -18784.1037 
##         193         194         195         196 
## -33901.0125 247928.2363 -11605.1512  20538.1655
MSRes=summary(model_pga)$sigma^2
MSRes
## [1] 1716669098

obtain standardized residuals

standardized_res=model_pga$residuals/summary(model_pga)$sigma
standardized_res
##           1           2           3           4           5           6 
## -0.18738759  2.35777529  0.45392286 -0.33456606 -0.24127479 -0.24433686 
##           7           8           9          10          11          12 
## -0.25567686 -0.89720604 -0.06693575 -0.45718273 -0.50297009  0.66788150 
##          13          14          15          16          17          18 
##  0.16210367 -0.15261273  0.06578707 -0.35977957  0.09913715 -0.08817225 
##          19          20          21          22          23          24 
## -1.11004711  0.20996370 -0.77463856 -0.84610866 -0.31669514  0.36806422 
##          25          26          27          28          29          30 
## -0.80467264 -0.58069744 -0.90318555  0.26656602  0.74671408  0.55328959 
##          31          32          33          34          35          36 
## -0.04161536  0.88647650 -0.03596209 -0.37706136  0.91109502  0.10529877 
##          37          38          39          40          41          42 
## -1.03190904  0.69645779  1.00542031 -0.26174125 -0.53035660 -0.10281116 
##          43          44          45          46          47          48 
## -0.22344449 -0.83361876 -0.76517122 -1.09955804  0.75512406 -0.24337466 
##          49          50          51          52          53          54 
## -0.28347182  1.37108950  0.44520163 -0.45185612 -0.24910971  1.44718662 
##          55          56          57          58          59          60 
## -0.20648865 -0.82286230 -0.92676440  0.87670534 -0.17544849 -0.13492910 
##          61          62          63          64          65          66 
##  5.60425056  1.13843936  0.16768080 -0.12701739  1.25796994 -0.79023146 
##          67          68          69          70          71          72 
##  0.55602661 -1.38330913  0.09653985  0.18527330 -1.49762928  0.70115650 
##          73          74          75          76          77          78 
## -1.18090517 -0.47999417 -0.08070146  0.09417306  1.23612000 -0.17249475 
##          79          80          81          82          83          84 
## -0.13116558 -0.21697720 -0.27240158 -0.55205277 -0.92382942 -0.63874976 
##          85          86          87          88          89          90 
##  0.07881089 -0.19359571  0.63531872  0.21505142 -0.47415902  0.51896792 
##          91          92          93          94          95          96 
## -0.58531900 -0.70874771  0.31306097  1.14328398 -0.93686773 -0.62412491 
##          97          98          99         100         101         102 
## -0.93718954 -1.50740521  0.23997259 -1.30253469 -0.11001299  0.75478357 
##         103         104         105         106         107         108 
## -0.52702542 -1.65892600 -0.18208395 -1.25302709  0.36683977 -0.13760413 
##         109         110         111         112         113         114 
##  0.03902458 -0.29748879 -0.05200669  0.26212120  0.57233748 -0.21380434 
##         115         116         117         118         119         120 
##  0.04965554 -1.08931649  0.20124869 -1.24735238 -0.68193627 -0.27072805 
##         121         122         123         124         125         126 
##  1.19720550 -0.59153291  0.99541979 -0.60217603 -1.55930388  0.47857298 
##         127         128         129         130         131         132 
## -0.50724862 -0.38994360 -0.62894964 -0.40616278  0.85849729 -0.49516742 
##         133         134         135         136         137         138 
## -0.01437899  0.09390710 -0.73085481 -0.53187878  0.58170149  0.09939967 
##         139         140         141         142         143         144 
## -0.49298586  0.10952645 -1.25603606  0.37407157  3.31486715  2.31691746 
##         145         146         147         148         149         150 
## -0.42768223 -0.33403009 -0.47545535 -0.39368403  0.51852614 -0.45446267 
##         151         152         153         154         155         156 
## -0.57401515 -0.60583252 -0.50190806 -1.03847614  1.03694543 -0.24393506 
##         157         158         159         160         161         162 
##  0.04430877 -0.13391326 -0.28688861 -0.48031456 -0.06702804  0.60371309 
##         163         164         165         166         167         168 
##  1.14713821 -0.40319396  0.45410604  0.65740032  0.46828277  0.71177522 
##         169         170         171         172         173         174 
##  0.15478635 -0.54528133 -0.93016365  0.81602999  0.05360339 -0.66785781 
##         175         176         177         178         179         180 
## -0.72022065  1.00938180  1.15376926 -1.73026781  0.36880298  3.14038787 
##         181         182         183         184         185         186 
## -0.35806893  0.25226532  0.48267379 -0.02316996  1.93110531  0.40340016 
##         187         188         189         190         191         192 
##  0.14863534 -0.68152554  0.14340937  0.56821809 -0.85160607 -0.45336416 
##         193         194         195         196 
## -0.81821865  5.98387753 -0.28009639  0.49569936
par(mfrow=c(1,2))
# generate QQ plot
qqnorm(model_pga$residuals,main="Model_PGA")
qqline(model_pga$residuals)

The qqplot shows that the residuals are normally distributed and hence it is a 45 degree line.

# residual plot for delivery time data set
par(mfrow=c(1,3))
# generate residual plot, NumberofCases vs residuals
plot(PGA$Age,model_pga$residuals,pch=20)
abline(h=0,col="grey")

plot(PGA$AverageDrive,model_pga$residuals,pch=20)
abline(h=0,col="grey")

plot(PGA$DrivingAccuracy,model_pga$residuals,pch=20)
abline(h=0,col="grey")

plot(PGA$GreensonRegulation,model_pga$residuals,pch=20)
abline(h=0,col="grey")

plot(PGA$AverageNumofPutts,model_pga$residuals,pch=20)
abline(h=0,col="grey")

plot(PGA$SavePercent,model_pga$residuals,pch=20)
abline(h=0,col="grey")

plot(PGA$NumEvents,model_pga$residuals,pch=20)
abline(h=0,col="grey")
# generate residual plot, fitted values vs residual