Week 2 Homework-CUNY MSDS

Q1. Use the summary function to gain an overview of the data set.

Then display the mean and median for at least two attributes.

getwd()
## [1] "C:/Users/Emahayz_Pro/Desktop"
setwd("C:/Users/Emahayz_Pro/Desktop/CUNY_Bridge/R_Class")
Salaries <- read.csv("Salaries.csv", sep = ",")
Salaries
##       X      rank discipline yrs.since.phd yrs.service    sex salary
## 1     1      Prof          B            19          18   Male 139750
## 2     2      Prof          B            20          16   Male 173200
## 3     3  AsstProf          B             4           3   Male  79750
## 4     4      Prof          B            45          39   Male 115000
## 5     5      Prof          B            40          41   Male 141500
## 6     6 AssocProf          B             6           6   Male  97000
## 7     7      Prof          B            30          23   Male 175000
## 8     8      Prof          B            45          45   Male 147765
## 9     9      Prof          B            21          20   Male 119250
## 10   10      Prof          B            18          18 Female 129000
## 11   11 AssocProf          B            12           8   Male 119800
## 12   12  AsstProf          B             7           2   Male  79800
## 13   13  AsstProf          B             1           1   Male  77700
## 14   14  AsstProf          B             2           0   Male  78000
## 15   15      Prof          B            20          18   Male 104800
## 16   16      Prof          B            12           3   Male 117150
## 17   17      Prof          B            19          20   Male 101000
## 18   18      Prof          A            38          34   Male 103450
## 19   19      Prof          A            37          23   Male 124750
## 20   20      Prof          A            39          36 Female 137000
## 21   21      Prof          A            31          26   Male  89565
## 22   22      Prof          A            36          31   Male 102580
## 23   23      Prof          A            34          30   Male  93904
## 24   24      Prof          A            24          19   Male 113068
## 25   25 AssocProf          A            13           8 Female  74830
## 26   26      Prof          A            21           8   Male 106294
## 27   27      Prof          A            35          23   Male 134885
## 28   28  AsstProf          B             5           3   Male  82379
## 29   29  AsstProf          B            11           0   Male  77000
## 30   30      Prof          B            12           8   Male 118223
## 31   31      Prof          B            20           4   Male 132261
## 32   32  AsstProf          B             7           2   Male  79916
## 33   33      Prof          B            13           9   Male 117256
## 34   34  AsstProf          B             4           2   Male  80225
## 35   35  AsstProf          B             4           2 Female  80225
## 36   36  AsstProf          B             5           0 Female  77000
## 37   37      Prof          B            22          21   Male 155750
## 38   38  AsstProf          B             7           4   Male  86373
## 39   39      Prof          B            41          31   Male 125196
## 40   40 AssocProf          B             9           9   Male 100938
## 41   41      Prof          B            23           2   Male 146500
## 42   42 AssocProf          B            23          23   Male  93418
## 43   43      Prof          B            40          27   Male 101299
## 44   44      Prof          B            38          38   Male 231545
## 45   45      Prof          B            19          19   Male  94384
## 46   46      Prof          B            25          15   Male 114778
## 47   47      Prof          B            40          28   Male  98193
## 48   48      Prof          B            23          19 Female 151768
## 49   49      Prof          B            25          25 Female 140096
## 50   50  AsstProf          B             1           1   Male  70768
## 51   51      Prof          B            28          28   Male 126621
## 52   52      Prof          B            12          11   Male 108875
## 53   53  AsstProf          B            11           3 Female  74692
## 54   54      Prof          B            16           9   Male 106639
## 55   55 AssocProf          B            12          11   Male 103760
## 56   56 AssocProf          B            14           5   Male  83900
## 57   57      Prof          B            23          21   Male 117704
## 58   58 AssocProf          B             9           8   Male  90215
## 59   59 AssocProf          B            10           9   Male 100135
## 60   60  AsstProf          B             8           3   Male  75044
## 61   61 AssocProf          B             9           8   Male  90304
## 62   62  AsstProf          B             3           2   Male  75243
## 63   63      Prof          B            33          31   Male 109785
## 64   64 AssocProf          B            11          11 Female 103613
## 65   65  AsstProf          B             4           3   Male  68404
## 66   66 AssocProf          B             9           8   Male 100522
## 67   67      Prof          B            22          12   Male 101000
## 68   68      Prof          B            35          31   Male  99418
## 69   69      Prof          B            17          17 Female 111512
## 70   70      Prof          B            28          36   Male  91412
## 71   71      Prof          B            17           2   Male 126320
## 72   72      Prof          B            45          45   Male 146856
## 73   73      Prof          B            29          19   Male 100131
## 74   74      Prof          B            35          34   Male  92391
## 75   75      Prof          B            28          23   Male 113398
## 76   76  AsstProf          B             8           3   Male  73266
## 77   77      Prof          B            17           3   Male 150480
## 78   78      Prof          B            26          19   Male 193000
## 79   79  AsstProf          B             3           1   Male  86100
## 80   80  AsstProf          B             6           2   Male  84240
## 81   81      Prof          B            43          28   Male 150743
## 82   82      Prof          B            17          16   Male 135585
## 83   83      Prof          B            22          20   Male 144640
## 84   84  AsstProf          B             6           2   Male  88825
## 85   85      Prof          B            17          18 Female 122960
## 86   86      Prof          B            15          14   Male 132825
## 87   87      Prof          B            37          37   Male 152708
## 88   88  AsstProf          B             2           2   Male  88400
## 89   89      Prof          B            25          25   Male 172272
## 90   90 AssocProf          B             9           7   Male 107008
## 91   91  AsstProf          B            10           5 Female  97032
## 92   92 AssocProf          B            10           7   Male 105128
## 93   93 AssocProf          B            10           7   Male 105631
## 94   94      Prof          B            38          38   Male 166024
## 95   95      Prof          B            21          20   Male 123683
## 96   96  AsstProf          B             4           0   Male  84000
## 97   97 AssocProf          B            17          12   Male  95611
## 98   98      Prof          B            13           7   Male 129676
## 99   99      Prof          B            30          14   Male 102235
## 100 100      Prof          B            41          26   Male 106689
## 101 101      Prof          B            42          25   Male 133217
## 102 102      Prof          B            28          23   Male 126933
## 103 103      Prof          B            16           5   Male 153303
## 104 104      Prof          B            20          14 Female 127512
## 105 105 AssocProf          A            18          10   Male  83850
## 106 106      Prof          A            31          28   Male 113543
## 107 107 AssocProf          A            11           8   Male  82099
## 108 108 AssocProf          A            10           8   Male  82600
## 109 109 AssocProf          A            15           8   Male  81500
## 110 110      Prof          A            40          31   Male 131205
## 111 111      Prof          A            20          16   Male 112429
## 112 112 AssocProf          A            19          16   Male  82100
## 113 113  AsstProf          A             3           1   Male  72500
## 114 114      Prof          A            37          37   Male 104279
## 115 115      Prof          A            12           0 Female 105000
## 116 116      Prof          A            21           9   Male 120806
## 117 117      Prof          A            30          29   Male 148500
## 118 118      Prof          A            39          36   Male 117515
## 119 119  AsstProf          A             4           1   Male  72500
## 120 120  AsstProf          A             5           3 Female  73500
## 121 121      Prof          A            14          14   Male 115313
## 122 122      Prof          A            32          32   Male 124309
## 123 123      Prof          A            24          22   Male  97262
## 124 124 AssocProf          A            25          22 Female  62884
## 125 125      Prof          A            24          22   Male  96614
## 126 126      Prof          A            54          49   Male  78162
## 127 127      Prof          A            28          26   Male 155500
## 128 128  AsstProf          A             2           0 Female  72500
## 129 129      Prof          A            32          30   Male 113278
## 130 130  AsstProf          A             4           2   Male  73000
## 131 131 AssocProf          A            11           9   Male  83001
## 132 132      Prof          A            56          57   Male  76840
## 133 133 AssocProf          A            10           8 Female  77500
## 134 134  AsstProf          A             3           1 Female  72500
## 135 135      Prof          A            35          25   Male 168635
## 136 136      Prof          A            20          18   Male 136000
## 137 137      Prof          A            16          14   Male 108262
## 138 138      Prof          A            17          14   Male 105668
## 139 139 AssocProf          A            10           7   Male  73877
## 140 140      Prof          A            21          18   Male 152664
## 141 141 AssocProf          A            14           8   Male 100102
## 142 142 AssocProf          A            15          10   Male  81500
## 143 143      Prof          A            19          11   Male 106608
## 144 144  AsstProf          B             3           3   Male  89942
## 145 145      Prof          B            27          27   Male 112696
## 146 146      Prof          B            28          28   Male 119015
## 147 147  AsstProf          B             4           4   Male  92000
## 148 148      Prof          B            27          27   Male 156938
## 149 149      Prof          B            36          26 Female 144651
## 150 150  AsstProf          B             4           3   Male  95079
## 151 151      Prof          B            14          12   Male 128148
## 152 152  AsstProf          B             4           4   Male  92000
## 153 153      Prof          B            21           9   Male 111168
## 154 154 AssocProf          B            12          10 Female 103994
## 155 155  AsstProf          B             4           0   Male  92000
## 156 156      Prof          B            21          21   Male 118971
## 157 157 AssocProf          B            12          18   Male 113341
## 158 158  AsstProf          B             1           0   Male  88000
## 159 159 AssocProf          B             6           6   Male  95408
## 160 160      Prof          B            15          16   Male 137167
## 161 161  AsstProf          B             2           2   Male  89516
## 162 162      Prof          B            26          19   Male 176500
## 163 163 AssocProf          B            22           7   Male  98510
## 164 164  AsstProf          B             3           3   Male  89942
## 165 165  AsstProf          B             1           0   Male  88795
## 166 166      Prof          B            21           8   Male 105890
## 167 167      Prof          B            16          16   Male 167284
## 168 168      Prof          B            18          19   Male 130664
## 169 169 AssocProf          B             8           6   Male 101210
## 170 170      Prof          B            25          18   Male 181257
## 171 171  AsstProf          B             5           5   Male  91227
## 172 172      Prof          B            19          19   Male 151575
## 173 173      Prof          B            37          24   Male  93164
## 174 174      Prof          B            20          20   Male 134185
## 175 175 AssocProf          B            17           6   Male 105000
## 176 176      Prof          B            28          25   Male 111751
## 177 177 AssocProf          B            10           7   Male  95436
## 178 178 AssocProf          B            13           9   Male 100944
## 179 179      Prof          B            27          14   Male 147349
## 180 180  AsstProf          B             3           3 Female  92000
## 181 181      Prof          B            11          11   Male 142467
## 182 182      Prof          B            18           5   Male 141136
## 183 183 AssocProf          B             8           8   Male 100000
## 184 184      Prof          B            26          22   Male 150000
## 185 185      Prof          B            23          23   Male 101000
## 186 186      Prof          B            33          30   Male 134000
## 187 187 AssocProf          B            13          10 Female 103750
## 188 188      Prof          B            18          10   Male 107500
## 189 189 AssocProf          B            28          28   Male 106300
## 190 190      Prof          B            25          19   Male 153750
## 191 191      Prof          B            22           9   Male 180000
## 192 192      Prof          B            43          22   Male 133700
## 193 193      Prof          B            19          18   Male 122100
## 194 194 AssocProf          B            19          19   Male  86250
## 195 195 AssocProf          B            48          53   Male  90000
## 196 196 AssocProf          B             9           7   Male 113600
## 197 197  AsstProf          B             4           4   Male  92700
## 198 198  AsstProf          B             4           4   Male  92000
## 199 199      Prof          B            34          33   Male 189409
## 200 200      Prof          B            38          22   Male 114500
## 201 201  AsstProf          B             4           4   Male  92700
## 202 202      Prof          B            40          40   Male 119700
## 203 203      Prof          B            28          17   Male 160400
## 204 204      Prof          B            17          17   Male 152500
## 205 205      Prof          B            19           5   Male 165000
## 206 206      Prof          B            21           2   Male  96545
## 207 207      Prof          B            35          33   Male 162200
## 208 208      Prof          B            18          18   Male 120000
## 209 209  AsstProf          B             7           2   Male  91300
## 210 210      Prof          B            20          20   Male 163200
## 211 211  AsstProf          B             4           3   Male  91000
## 212 212      Prof          B            39          39   Male 111350
## 213 213      Prof          B            15           7   Male 128400
## 214 214      Prof          B            26          19   Male 126200
## 215 215 AssocProf          B            11           1   Male 118700
## 216 216      Prof          B            16          11   Male 145350
## 217 217      Prof          B            15          11   Male 146000
## 218 218 AssocProf          B            29          22   Male 105350
## 219 219 AssocProf          B            14           7 Female 109650
## 220 220      Prof          B            13          11   Male 119500
## 221 221      Prof          B            21          21   Male 170000
## 222 222      Prof          B            23          10   Male 145200
## 223 223 AssocProf          B            13           6   Male 107150
## 224 224      Prof          B            34          20   Male 129600
## 225 225      Prof          A            38          35   Male  87800
## 226 226      Prof          A            20          20   Male 122400
## 227 227  AsstProf          A             3           1   Male  63900
## 228 228 AssocProf          A             9           7   Male  70000
## 229 229      Prof          A            16          11   Male  88175
## 230 230      Prof          A            39          38   Male 133900
## 231 231      Prof          A            29          27 Female  91000
## 232 232 AssocProf          A            26          24 Female  73300
## 233 233      Prof          A            38          19   Male 148750
## 234 234      Prof          A            36          19 Female 117555
## 235 235  AsstProf          A             8           3   Male  69700
## 236 236      Prof          A            28          17   Male  81700
## 237 237      Prof          A            25          25   Male 114000
## 238 238  AsstProf          A             7           6 Female  63100
## 239 239      Prof          A            46          40   Male  77202
## 240 240      Prof          A            19           6   Male  96200
## 241 241  AsstProf          A             5           3   Male  69200
## 242 242      Prof          A            31          30   Male 122875
## 243 243      Prof          A            38          37   Male 102600
## 244 244      Prof          A            23          23   Male 108200
## 245 245      Prof          A            19          23   Male  84273
## 246 246      Prof          A            17          11 Female  90450
## 247 247      Prof          A            30          23   Male  91100
## 248 248      Prof          A            21          18   Male 101100
## 249 249      Prof          A            28          23   Male 128800
## 250 250      Prof          A            29           7   Male 204000
## 251 251      Prof          A            39          39   Male 109000
## 252 252      Prof          A            20           8   Male 102000
## 253 253      Prof          A            31          12   Male 132000
## 254 254  AsstProf          A             4           2 Female  77500
## 255 255      Prof          A            28           7 Female 116450
## 256 256 AssocProf          A            12           8   Male  83000
## 257 257      Prof          A            22          22   Male 140300
## 258 258 AssocProf          A            30          23   Male  74000
## 259 259  AsstProf          A             9           3   Male  73800
## 260 260      Prof          A            32          30   Male  92550
## 261 261 AssocProf          A            41          33   Male  88600
## 262 262      Prof          A            45          45   Male 107550
## 263 263      Prof          A            31          26   Male 121200
## 264 264      Prof          A            31          31   Male 126000
## 265 265      Prof          A            37          35   Male  99000
## 266 266      Prof          A            36          30   Male 134800
## 267 267      Prof          A            43          43   Male 143940
## 268 268      Prof          A            14          10   Male 104350
## 269 269      Prof          A            47          44   Male  89650
## 270 270      Prof          A            13           7   Male 103700
## 271 271      Prof          A            42          40   Male 143250
## 272 272      Prof          A            42          18   Male 194800
## 273 273  AsstProf          A             4           1   Male  73000
## 274 274  AsstProf          A             8           4   Male  74000
## 275 275  AsstProf          A             8           3 Female  78500
## 276 276      Prof          A            12           6   Male  93000
## 277 277      Prof          A            52          48   Male 107200
## 278 278      Prof          A            31          27   Male 163200
## 279 279      Prof          A            24          18   Male 107100
## 280 280      Prof          A            46          46   Male 100600
## 281 281      Prof          A            39          38   Male 136500
## 282 282      Prof          A            37          27   Male 103600
## 283 283      Prof          A            51          51   Male  57800
## 284 284      Prof          A            45          43   Male 155865
## 285 285 AssocProf          A             8           6   Male  88650
## 286 286 AssocProf          A            49          49   Male  81800
## 287 287      Prof          A            28          27   Male 115800
## 288 288  AsstProf          A             2           0   Male  85000
## 289 289      Prof          A            29          27   Male 150500
## 290 290  AsstProf          A             8           5   Male  74000
## 291 291      Prof          A            33           7   Male 174500
## 292 292      Prof          A            32          28   Male 168500
## 293 293      Prof          A            39           9   Male 183800
## 294 294 AssocProf          A            11           1   Male 104800
## 295 295      Prof          A            19           7   Male 107300
## 296 296      Prof          A            40          36   Male  97150
## 297 297      Prof          A            18          18   Male 126300
## 298 298      Prof          A            17          11   Male 148800
## 299 299      Prof          A            49          43   Male  72300
## 300 300 AssocProf          A            45          39   Male  70700
## 301 301      Prof          A            39          36   Male  88600
## 302 302      Prof          A            27          16   Male 127100
## 303 303      Prof          A            28          13   Male 170500
## 304 304      Prof          A            14           4   Male 105260
## 305 305      Prof          A            46          44   Male 144050
## 306 306      Prof          A            33          31   Male 111350
## 307 307  AsstProf          A             7           4   Male  74500
## 308 308      Prof          A            31          28   Male 122500
## 309 309  AsstProf          A             5           0   Male  74000
## 310 310      Prof          A            22          15   Male 166800
## 311 311      Prof          A            20           7   Male  92050
## 312 312      Prof          A            14           9   Male 108100
## 313 313      Prof          A            29          19   Male  94350
## 314 314      Prof          A            35          35   Male 100351
## 315 315      Prof          A            22           6   Male 146800
## 316 316  AsstProf          B             6           3   Male  84716
## 317 317 AssocProf          B            12           9 Female  71065
## 318 318      Prof          B            46          45   Male  67559
## 319 319      Prof          B            16          16   Male 134550
## 320 320      Prof          B            16          15   Male 135027
## 321 321      Prof          B            24          23   Male 104428
## 322 322 AssocProf          B             9           9   Male  95642
## 323 323 AssocProf          B            13          11   Male 126431
## 324 324      Prof          B            24          15 Female 161101
## 325 325      Prof          B            30          31   Male 162221
## 326 326  AsstProf          B             8           4   Male  84500
## 327 327      Prof          B            23          15   Male 124714
## 328 328      Prof          B            37          37   Male 151650
## 329 329 AssocProf          B            10          10   Male  99247
## 330 330      Prof          B            23          23   Male 134778
## 331 331      Prof          B            49          60   Male 192253
## 332 332      Prof          B            20           9   Male 116518
## 333 333      Prof          B            18          10 Female 105450
## 334 334      Prof          B            33          19   Male 145098
## 335 335 AssocProf          B            19           6 Female 104542
## 336 336      Prof          B            36          38   Male 151445
## 337 337      Prof          B            35          23   Male  98053
## 338 338      Prof          B            13          12   Male 145000
## 339 339      Prof          B            32          25   Male 128464
## 340 340      Prof          B            37          15   Male 137317
## 341 341      Prof          B            13          11   Male 106231
## 342 342      Prof          B            17          17 Female 124312
## 343 343      Prof          B            38          38   Male 114596
## 344 344      Prof          B            31          31   Male 162150
## 345 345      Prof          B            32          35   Male 150376
## 346 346      Prof          B            15          10   Male 107986
## 347 347      Prof          B            41          27   Male 142023
## 348 348      Prof          B            39          33   Male 128250
## 349 349  AsstProf          B             4           3   Male  80139
## 350 350      Prof          B            27          28   Male 144309
## 351 351      Prof          B            56          49   Male 186960
## 352 352      Prof          B            38          38   Male  93519
## 353 353      Prof          B            26          27   Male 142500
## 354 354      Prof          B            22          20   Male 138000
## 355 355  AsstProf          B             8           1   Male  83600
## 356 356      Prof          B            25          21   Male 145028
## 357 357      Prof          A            49          40   Male  88709
## 358 358      Prof          A            39          35   Male 107309
## 359 359      Prof          A            28          14 Female 109954
## 360 360  AsstProf          A            11           4   Male  78785
## 361 361      Prof          A            14          11   Male 121946
## 362 362      Prof          A            23          15 Female 109646
## 363 363      Prof          A            30          30   Male 138771
## 364 364 AssocProf          A            20          17   Male  81285
## 365 365      Prof          A            43          43   Male 205500
## 366 366      Prof          A            43          40   Male 101036
## 367 367      Prof          A            15          10   Male 115435
## 368 368 AssocProf          A            10           1   Male 108413
## 369 369      Prof          A            35          30   Male 131950
## 370 370      Prof          A            33          31   Male 134690
## 371 371 AssocProf          A            13           8   Male  78182
## 372 372      Prof          A            23          20   Male 110515
## 373 373      Prof          A            12           7   Male 109707
## 374 374      Prof          A            30          26   Male 136660
## 375 375      Prof          A            27          19   Male 103275
## 376 376      Prof          A            28          26   Male 103649
## 377 377  AsstProf          A             4           1   Male  74856
## 378 378  AsstProf          A             6           3   Male  77081
## 379 379      Prof          A            38          38   Male 150680
## 380 380 AssocProf          A            11           8   Male 104121
## 381 381  AsstProf          A             8           3   Male  75996
## 382 382      Prof          A            27          23   Male 172505
## 383 383 AssocProf          A             8           5   Male  86895
## 384 384      Prof          A            44          44   Male 105000
## 385 385      Prof          A            27          21   Male 125192
## 386 386      Prof          A            15           9   Male 114330
## 387 387      Prof          A            29          27   Male 139219
## 388 388      Prof          A            29          15   Male 109305
## 389 389      Prof          A            38          36   Male 119450
## 390 390      Prof          A            33          18   Male 186023
## 391 391      Prof          A            40          19   Male 166605
## 392 392      Prof          A            30          19   Male 151292
## 393 393      Prof          A            33          30   Male 103106
## 394 394      Prof          A            31          19   Male 150564
## 395 395      Prof          A            42          25   Male 101738
## 396 396      Prof          A            25          15   Male  95329
## 397 397  AsstProf          A             8           4   Male  81035
summary(Salaries)
##        X              rank     discipline yrs.since.phd    yrs.service   
##  Min.   :  1   AssocProf: 64   A:181      Min.   : 1.00   Min.   : 0.00  
##  1st Qu.:100   AsstProf : 67   B:216      1st Qu.:12.00   1st Qu.: 7.00  
##  Median :199   Prof     :266              Median :21.00   Median :16.00  
##  Mean   :199                              Mean   :22.31   Mean   :17.61  
##  3rd Qu.:298                              3rd Qu.:32.00   3rd Qu.:27.00  
##  Max.   :397                              Max.   :56.00   Max.   :60.00  
##      sex          salary      
##  Female: 39   Min.   : 57800  
##  Male  :358   1st Qu.: 91000  
##               Median :107300  
##               Mean   :113706  
##               3rd Qu.:134185  
##               Max.   :231545
mean(Salaries$salary)# The mean salary is $113,706.50
## [1] 113706.5
median(Salaries$salary)# The median salary is $107,300
## [1] 107300
mean(Salaries$yrs.service)# The average year of service is 17.6 corresponding to 17 years and 6 months.
## [1] 17.61461
median(Salaries$yrs.service) # The median year of service is 16 years
## [1] 16

Q2. Create a new data frame with a subset of the columns and rows. Make sure to rename it.

Salaries_Service_Years <- subset(Salaries, yrs.service >2)
Salaries_Service_Years # New data frame with years of service greater than 2.
##       X      rank discipline yrs.since.phd yrs.service    sex salary
## 1     1      Prof          B            19          18   Male 139750
## 2     2      Prof          B            20          16   Male 173200
## 3     3  AsstProf          B             4           3   Male  79750
## 4     4      Prof          B            45          39   Male 115000
## 5     5      Prof          B            40          41   Male 141500
## 6     6 AssocProf          B             6           6   Male  97000
## 7     7      Prof          B            30          23   Male 175000
## 8     8      Prof          B            45          45   Male 147765
## 9     9      Prof          B            21          20   Male 119250
## 10   10      Prof          B            18          18 Female 129000
## 11   11 AssocProf          B            12           8   Male 119800
## 15   15      Prof          B            20          18   Male 104800
## 16   16      Prof          B            12           3   Male 117150
## 17   17      Prof          B            19          20   Male 101000
## 18   18      Prof          A            38          34   Male 103450
## 19   19      Prof          A            37          23   Male 124750
## 20   20      Prof          A            39          36 Female 137000
## 21   21      Prof          A            31          26   Male  89565
## 22   22      Prof          A            36          31   Male 102580
## 23   23      Prof          A            34          30   Male  93904
## 24   24      Prof          A            24          19   Male 113068
## 25   25 AssocProf          A            13           8 Female  74830
## 26   26      Prof          A            21           8   Male 106294
## 27   27      Prof          A            35          23   Male 134885
## 28   28  AsstProf          B             5           3   Male  82379
## 30   30      Prof          B            12           8   Male 118223
## 31   31      Prof          B            20           4   Male 132261
## 33   33      Prof          B            13           9   Male 117256
## 37   37      Prof          B            22          21   Male 155750
## 38   38  AsstProf          B             7           4   Male  86373
## 39   39      Prof          B            41          31   Male 125196
## 40   40 AssocProf          B             9           9   Male 100938
## 42   42 AssocProf          B            23          23   Male  93418
## 43   43      Prof          B            40          27   Male 101299
## 44   44      Prof          B            38          38   Male 231545
## 45   45      Prof          B            19          19   Male  94384
## 46   46      Prof          B            25          15   Male 114778
## 47   47      Prof          B            40          28   Male  98193
## 48   48      Prof          B            23          19 Female 151768
## 49   49      Prof          B            25          25 Female 140096
## 51   51      Prof          B            28          28   Male 126621
## 52   52      Prof          B            12          11   Male 108875
## 53   53  AsstProf          B            11           3 Female  74692
## 54   54      Prof          B            16           9   Male 106639
## 55   55 AssocProf          B            12          11   Male 103760
## 56   56 AssocProf          B            14           5   Male  83900
## 57   57      Prof          B            23          21   Male 117704
## 58   58 AssocProf          B             9           8   Male  90215
## 59   59 AssocProf          B            10           9   Male 100135
## 60   60  AsstProf          B             8           3   Male  75044
## 61   61 AssocProf          B             9           8   Male  90304
## 63   63      Prof          B            33          31   Male 109785
## 64   64 AssocProf          B            11          11 Female 103613
## 65   65  AsstProf          B             4           3   Male  68404
## 66   66 AssocProf          B             9           8   Male 100522
## 67   67      Prof          B            22          12   Male 101000
## 68   68      Prof          B            35          31   Male  99418
## 69   69      Prof          B            17          17 Female 111512
## 70   70      Prof          B            28          36   Male  91412
## 72   72      Prof          B            45          45   Male 146856
## 73   73      Prof          B            29          19   Male 100131
## 74   74      Prof          B            35          34   Male  92391
## 75   75      Prof          B            28          23   Male 113398
## 76   76  AsstProf          B             8           3   Male  73266
## 77   77      Prof          B            17           3   Male 150480
## 78   78      Prof          B            26          19   Male 193000
## 81   81      Prof          B            43          28   Male 150743
## 82   82      Prof          B            17          16   Male 135585
## 83   83      Prof          B            22          20   Male 144640
## 85   85      Prof          B            17          18 Female 122960
## 86   86      Prof          B            15          14   Male 132825
## 87   87      Prof          B            37          37   Male 152708
## 89   89      Prof          B            25          25   Male 172272
## 90   90 AssocProf          B             9           7   Male 107008
## 91   91  AsstProf          B            10           5 Female  97032
## 92   92 AssocProf          B            10           7   Male 105128
## 93   93 AssocProf          B            10           7   Male 105631
## 94   94      Prof          B            38          38   Male 166024
## 95   95      Prof          B            21          20   Male 123683
## 97   97 AssocProf          B            17          12   Male  95611
## 98   98      Prof          B            13           7   Male 129676
## 99   99      Prof          B            30          14   Male 102235
## 100 100      Prof          B            41          26   Male 106689
## 101 101      Prof          B            42          25   Male 133217
## 102 102      Prof          B            28          23   Male 126933
## 103 103      Prof          B            16           5   Male 153303
## 104 104      Prof          B            20          14 Female 127512
## 105 105 AssocProf          A            18          10   Male  83850
## 106 106      Prof          A            31          28   Male 113543
## 107 107 AssocProf          A            11           8   Male  82099
## 108 108 AssocProf          A            10           8   Male  82600
## 109 109 AssocProf          A            15           8   Male  81500
## 110 110      Prof          A            40          31   Male 131205
## 111 111      Prof          A            20          16   Male 112429
## 112 112 AssocProf          A            19          16   Male  82100
## 114 114      Prof          A            37          37   Male 104279
## 116 116      Prof          A            21           9   Male 120806
## 117 117      Prof          A            30          29   Male 148500
## 118 118      Prof          A            39          36   Male 117515
## 120 120  AsstProf          A             5           3 Female  73500
## 121 121      Prof          A            14          14   Male 115313
## 122 122      Prof          A            32          32   Male 124309
## 123 123      Prof          A            24          22   Male  97262
## 124 124 AssocProf          A            25          22 Female  62884
## 125 125      Prof          A            24          22   Male  96614
## 126 126      Prof          A            54          49   Male  78162
## 127 127      Prof          A            28          26   Male 155500
## 129 129      Prof          A            32          30   Male 113278
## 131 131 AssocProf          A            11           9   Male  83001
## 132 132      Prof          A            56          57   Male  76840
## 133 133 AssocProf          A            10           8 Female  77500
## 135 135      Prof          A            35          25   Male 168635
## 136 136      Prof          A            20          18   Male 136000
## 137 137      Prof          A            16          14   Male 108262
## 138 138      Prof          A            17          14   Male 105668
## 139 139 AssocProf          A            10           7   Male  73877
## 140 140      Prof          A            21          18   Male 152664
## 141 141 AssocProf          A            14           8   Male 100102
## 142 142 AssocProf          A            15          10   Male  81500
## 143 143      Prof          A            19          11   Male 106608
## 144 144  AsstProf          B             3           3   Male  89942
## 145 145      Prof          B            27          27   Male 112696
## 146 146      Prof          B            28          28   Male 119015
## 147 147  AsstProf          B             4           4   Male  92000
## 148 148      Prof          B            27          27   Male 156938
## 149 149      Prof          B            36          26 Female 144651
## 150 150  AsstProf          B             4           3   Male  95079
## 151 151      Prof          B            14          12   Male 128148
## 152 152  AsstProf          B             4           4   Male  92000
## 153 153      Prof          B            21           9   Male 111168
## 154 154 AssocProf          B            12          10 Female 103994
## 156 156      Prof          B            21          21   Male 118971
## 157 157 AssocProf          B            12          18   Male 113341
## 159 159 AssocProf          B             6           6   Male  95408
## 160 160      Prof          B            15          16   Male 137167
## 162 162      Prof          B            26          19   Male 176500
## 163 163 AssocProf          B            22           7   Male  98510
## 164 164  AsstProf          B             3           3   Male  89942
## 166 166      Prof          B            21           8   Male 105890
## 167 167      Prof          B            16          16   Male 167284
## 168 168      Prof          B            18          19   Male 130664
## 169 169 AssocProf          B             8           6   Male 101210
## 170 170      Prof          B            25          18   Male 181257
## 171 171  AsstProf          B             5           5   Male  91227
## 172 172      Prof          B            19          19   Male 151575
## 173 173      Prof          B            37          24   Male  93164
## 174 174      Prof          B            20          20   Male 134185
## 175 175 AssocProf          B            17           6   Male 105000
## 176 176      Prof          B            28          25   Male 111751
## 177 177 AssocProf          B            10           7   Male  95436
## 178 178 AssocProf          B            13           9   Male 100944
## 179 179      Prof          B            27          14   Male 147349
## 180 180  AsstProf          B             3           3 Female  92000
## 181 181      Prof          B            11          11   Male 142467
## 182 182      Prof          B            18           5   Male 141136
## 183 183 AssocProf          B             8           8   Male 100000
## 184 184      Prof          B            26          22   Male 150000
## 185 185      Prof          B            23          23   Male 101000
## 186 186      Prof          B            33          30   Male 134000
## 187 187 AssocProf          B            13          10 Female 103750
## 188 188      Prof          B            18          10   Male 107500
## 189 189 AssocProf          B            28          28   Male 106300
## 190 190      Prof          B            25          19   Male 153750
## 191 191      Prof          B            22           9   Male 180000
## 192 192      Prof          B            43          22   Male 133700
## 193 193      Prof          B            19          18   Male 122100
## 194 194 AssocProf          B            19          19   Male  86250
## 195 195 AssocProf          B            48          53   Male  90000
## 196 196 AssocProf          B             9           7   Male 113600
## 197 197  AsstProf          B             4           4   Male  92700
## 198 198  AsstProf          B             4           4   Male  92000
## 199 199      Prof          B            34          33   Male 189409
## 200 200      Prof          B            38          22   Male 114500
## 201 201  AsstProf          B             4           4   Male  92700
## 202 202      Prof          B            40          40   Male 119700
## 203 203      Prof          B            28          17   Male 160400
## 204 204      Prof          B            17          17   Male 152500
## 205 205      Prof          B            19           5   Male 165000
## 207 207      Prof          B            35          33   Male 162200
## 208 208      Prof          B            18          18   Male 120000
## 210 210      Prof          B            20          20   Male 163200
## 211 211  AsstProf          B             4           3   Male  91000
## 212 212      Prof          B            39          39   Male 111350
## 213 213      Prof          B            15           7   Male 128400
## 214 214      Prof          B            26          19   Male 126200
## 216 216      Prof          B            16          11   Male 145350
## 217 217      Prof          B            15          11   Male 146000
## 218 218 AssocProf          B            29          22   Male 105350
## 219 219 AssocProf          B            14           7 Female 109650
## 220 220      Prof          B            13          11   Male 119500
## 221 221      Prof          B            21          21   Male 170000
## 222 222      Prof          B            23          10   Male 145200
## 223 223 AssocProf          B            13           6   Male 107150
## 224 224      Prof          B            34          20   Male 129600
## 225 225      Prof          A            38          35   Male  87800
## 226 226      Prof          A            20          20   Male 122400
## 228 228 AssocProf          A             9           7   Male  70000
## 229 229      Prof          A            16          11   Male  88175
## 230 230      Prof          A            39          38   Male 133900
## 231 231      Prof          A            29          27 Female  91000
## 232 232 AssocProf          A            26          24 Female  73300
## 233 233      Prof          A            38          19   Male 148750
## 234 234      Prof          A            36          19 Female 117555
## 235 235  AsstProf          A             8           3   Male  69700
## 236 236      Prof          A            28          17   Male  81700
## 237 237      Prof          A            25          25   Male 114000
## 238 238  AsstProf          A             7           6 Female  63100
## 239 239      Prof          A            46          40   Male  77202
## 240 240      Prof          A            19           6   Male  96200
## 241 241  AsstProf          A             5           3   Male  69200
## 242 242      Prof          A            31          30   Male 122875
## 243 243      Prof          A            38          37   Male 102600
## 244 244      Prof          A            23          23   Male 108200
## 245 245      Prof          A            19          23   Male  84273
## 246 246      Prof          A            17          11 Female  90450
## 247 247      Prof          A            30          23   Male  91100
## 248 248      Prof          A            21          18   Male 101100
## 249 249      Prof          A            28          23   Male 128800
## 250 250      Prof          A            29           7   Male 204000
## 251 251      Prof          A            39          39   Male 109000
## 252 252      Prof          A            20           8   Male 102000
## 253 253      Prof          A            31          12   Male 132000
## 255 255      Prof          A            28           7 Female 116450
## 256 256 AssocProf          A            12           8   Male  83000
## 257 257      Prof          A            22          22   Male 140300
## 258 258 AssocProf          A            30          23   Male  74000
## 259 259  AsstProf          A             9           3   Male  73800
## 260 260      Prof          A            32          30   Male  92550
## 261 261 AssocProf          A            41          33   Male  88600
## 262 262      Prof          A            45          45   Male 107550
## 263 263      Prof          A            31          26   Male 121200
## 264 264      Prof          A            31          31   Male 126000
## 265 265      Prof          A            37          35   Male  99000
## 266 266      Prof          A            36          30   Male 134800
## 267 267      Prof          A            43          43   Male 143940
## 268 268      Prof          A            14          10   Male 104350
## 269 269      Prof          A            47          44   Male  89650
## 270 270      Prof          A            13           7   Male 103700
## 271 271      Prof          A            42          40   Male 143250
## 272 272      Prof          A            42          18   Male 194800
## 274 274  AsstProf          A             8           4   Male  74000
## 275 275  AsstProf          A             8           3 Female  78500
## 276 276      Prof          A            12           6   Male  93000
## 277 277      Prof          A            52          48   Male 107200
## 278 278      Prof          A            31          27   Male 163200
## 279 279      Prof          A            24          18   Male 107100
## 280 280      Prof          A            46          46   Male 100600
## 281 281      Prof          A            39          38   Male 136500
## 282 282      Prof          A            37          27   Male 103600
## 283 283      Prof          A            51          51   Male  57800
## 284 284      Prof          A            45          43   Male 155865
## 285 285 AssocProf          A             8           6   Male  88650
## 286 286 AssocProf          A            49          49   Male  81800
## 287 287      Prof          A            28          27   Male 115800
## 289 289      Prof          A            29          27   Male 150500
## 290 290  AsstProf          A             8           5   Male  74000
## 291 291      Prof          A            33           7   Male 174500
## 292 292      Prof          A            32          28   Male 168500
## 293 293      Prof          A            39           9   Male 183800
## 295 295      Prof          A            19           7   Male 107300
## 296 296      Prof          A            40          36   Male  97150
## 297 297      Prof          A            18          18   Male 126300
## 298 298      Prof          A            17          11   Male 148800
## 299 299      Prof          A            49          43   Male  72300
## 300 300 AssocProf          A            45          39   Male  70700
## 301 301      Prof          A            39          36   Male  88600
## 302 302      Prof          A            27          16   Male 127100
## 303 303      Prof          A            28          13   Male 170500
## 304 304      Prof          A            14           4   Male 105260
## 305 305      Prof          A            46          44   Male 144050
## 306 306      Prof          A            33          31   Male 111350
## 307 307  AsstProf          A             7           4   Male  74500
## 308 308      Prof          A            31          28   Male 122500
## 310 310      Prof          A            22          15   Male 166800
## 311 311      Prof          A            20           7   Male  92050
## 312 312      Prof          A            14           9   Male 108100
## 313 313      Prof          A            29          19   Male  94350
## 314 314      Prof          A            35          35   Male 100351
## 315 315      Prof          A            22           6   Male 146800
## 316 316  AsstProf          B             6           3   Male  84716
## 317 317 AssocProf          B            12           9 Female  71065
## 318 318      Prof          B            46          45   Male  67559
## 319 319      Prof          B            16          16   Male 134550
## 320 320      Prof          B            16          15   Male 135027
## 321 321      Prof          B            24          23   Male 104428
## 322 322 AssocProf          B             9           9   Male  95642
## 323 323 AssocProf          B            13          11   Male 126431
## 324 324      Prof          B            24          15 Female 161101
## 325 325      Prof          B            30          31   Male 162221
## 326 326  AsstProf          B             8           4   Male  84500
## 327 327      Prof          B            23          15   Male 124714
## 328 328      Prof          B            37          37   Male 151650
## 329 329 AssocProf          B            10          10   Male  99247
## 330 330      Prof          B            23          23   Male 134778
## 331 331      Prof          B            49          60   Male 192253
## 332 332      Prof          B            20           9   Male 116518
## 333 333      Prof          B            18          10 Female 105450
## 334 334      Prof          B            33          19   Male 145098
## 335 335 AssocProf          B            19           6 Female 104542
## 336 336      Prof          B            36          38   Male 151445
## 337 337      Prof          B            35          23   Male  98053
## 338 338      Prof          B            13          12   Male 145000
## 339 339      Prof          B            32          25   Male 128464
## 340 340      Prof          B            37          15   Male 137317
## 341 341      Prof          B            13          11   Male 106231
## 342 342      Prof          B            17          17 Female 124312
## 343 343      Prof          B            38          38   Male 114596
## 344 344      Prof          B            31          31   Male 162150
## 345 345      Prof          B            32          35   Male 150376
## 346 346      Prof          B            15          10   Male 107986
## 347 347      Prof          B            41          27   Male 142023
## 348 348      Prof          B            39          33   Male 128250
## 349 349  AsstProf          B             4           3   Male  80139
## 350 350      Prof          B            27          28   Male 144309
## 351 351      Prof          B            56          49   Male 186960
## 352 352      Prof          B            38          38   Male  93519
## 353 353      Prof          B            26          27   Male 142500
## 354 354      Prof          B            22          20   Male 138000
## 356 356      Prof          B            25          21   Male 145028
## 357 357      Prof          A            49          40   Male  88709
## 358 358      Prof          A            39          35   Male 107309
## 359 359      Prof          A            28          14 Female 109954
## 360 360  AsstProf          A            11           4   Male  78785
## 361 361      Prof          A            14          11   Male 121946
## 362 362      Prof          A            23          15 Female 109646
## 363 363      Prof          A            30          30   Male 138771
## 364 364 AssocProf          A            20          17   Male  81285
## 365 365      Prof          A            43          43   Male 205500
## 366 366      Prof          A            43          40   Male 101036
## 367 367      Prof          A            15          10   Male 115435
## 369 369      Prof          A            35          30   Male 131950
## 370 370      Prof          A            33          31   Male 134690
## 371 371 AssocProf          A            13           8   Male  78182
## 372 372      Prof          A            23          20   Male 110515
## 373 373      Prof          A            12           7   Male 109707
## 374 374      Prof          A            30          26   Male 136660
## 375 375      Prof          A            27          19   Male 103275
## 376 376      Prof          A            28          26   Male 103649
## 378 378  AsstProf          A             6           3   Male  77081
## 379 379      Prof          A            38          38   Male 150680
## 380 380 AssocProf          A            11           8   Male 104121
## 381 381  AsstProf          A             8           3   Male  75996
## 382 382      Prof          A            27          23   Male 172505
## 383 383 AssocProf          A             8           5   Male  86895
## 384 384      Prof          A            44          44   Male 105000
## 385 385      Prof          A            27          21   Male 125192
## 386 386      Prof          A            15           9   Male 114330
## 387 387      Prof          A            29          27   Male 139219
## 388 388      Prof          A            29          15   Male 109305
## 389 389      Prof          A            38          36   Male 119450
## 390 390      Prof          A            33          18   Male 186023
## 391 391      Prof          A            40          19   Male 166605
## 392 392      Prof          A            30          19   Male 151292
## 393 393      Prof          A            33          30   Male 103106
## 394 394      Prof          A            31          19   Male 150564
## 395 395      Prof          A            42          25   Male 101738
## 396 396      Prof          A            25          15   Male  95329
## 397 397  AsstProf          A             8           4   Male  81035

# Q3. Create new column names for the new data frame.

Salaries_Service_Years["Pro_Rata_Salary"] <- NA # New Column created known as Pro Rata Salary with no Values.
Salaries_Service_Years #View the new column, a variable with NA values 
##       X      rank discipline yrs.since.phd yrs.service    sex salary
## 1     1      Prof          B            19          18   Male 139750
## 2     2      Prof          B            20          16   Male 173200
## 3     3  AsstProf          B             4           3   Male  79750
## 4     4      Prof          B            45          39   Male 115000
## 5     5      Prof          B            40          41   Male 141500
## 6     6 AssocProf          B             6           6   Male  97000
## 7     7      Prof          B            30          23   Male 175000
## 8     8      Prof          B            45          45   Male 147765
## 9     9      Prof          B            21          20   Male 119250
## 10   10      Prof          B            18          18 Female 129000
## 11   11 AssocProf          B            12           8   Male 119800
## 15   15      Prof          B            20          18   Male 104800
## 16   16      Prof          B            12           3   Male 117150
## 17   17      Prof          B            19          20   Male 101000
## 18   18      Prof          A            38          34   Male 103450
## 19   19      Prof          A            37          23   Male 124750
## 20   20      Prof          A            39          36 Female 137000
## 21   21      Prof          A            31          26   Male  89565
## 22   22      Prof          A            36          31   Male 102580
## 23   23      Prof          A            34          30   Male  93904
## 24   24      Prof          A            24          19   Male 113068
## 25   25 AssocProf          A            13           8 Female  74830
## 26   26      Prof          A            21           8   Male 106294
## 27   27      Prof          A            35          23   Male 134885
## 28   28  AsstProf          B             5           3   Male  82379
## 30   30      Prof          B            12           8   Male 118223
## 31   31      Prof          B            20           4   Male 132261
## 33   33      Prof          B            13           9   Male 117256
## 37   37      Prof          B            22          21   Male 155750
## 38   38  AsstProf          B             7           4   Male  86373
## 39   39      Prof          B            41          31   Male 125196
## 40   40 AssocProf          B             9           9   Male 100938
## 42   42 AssocProf          B            23          23   Male  93418
## 43   43      Prof          B            40          27   Male 101299
## 44   44      Prof          B            38          38   Male 231545
## 45   45      Prof          B            19          19   Male  94384
## 46   46      Prof          B            25          15   Male 114778
## 47   47      Prof          B            40          28   Male  98193
## 48   48      Prof          B            23          19 Female 151768
## 49   49      Prof          B            25          25 Female 140096
## 51   51      Prof          B            28          28   Male 126621
## 52   52      Prof          B            12          11   Male 108875
## 53   53  AsstProf          B            11           3 Female  74692
## 54   54      Prof          B            16           9   Male 106639
## 55   55 AssocProf          B            12          11   Male 103760
## 56   56 AssocProf          B            14           5   Male  83900
## 57   57      Prof          B            23          21   Male 117704
## 58   58 AssocProf          B             9           8   Male  90215
## 59   59 AssocProf          B            10           9   Male 100135
## 60   60  AsstProf          B             8           3   Male  75044
## 61   61 AssocProf          B             9           8   Male  90304
## 63   63      Prof          B            33          31   Male 109785
## 64   64 AssocProf          B            11          11 Female 103613
## 65   65  AsstProf          B             4           3   Male  68404
## 66   66 AssocProf          B             9           8   Male 100522
## 67   67      Prof          B            22          12   Male 101000
## 68   68      Prof          B            35          31   Male  99418
## 69   69      Prof          B            17          17 Female 111512
## 70   70      Prof          B            28          36   Male  91412
## 72   72      Prof          B            45          45   Male 146856
## 73   73      Prof          B            29          19   Male 100131
## 74   74      Prof          B            35          34   Male  92391
## 75   75      Prof          B            28          23   Male 113398
## 76   76  AsstProf          B             8           3   Male  73266
## 77   77      Prof          B            17           3   Male 150480
## 78   78      Prof          B            26          19   Male 193000
## 81   81      Prof          B            43          28   Male 150743
## 82   82      Prof          B            17          16   Male 135585
## 83   83      Prof          B            22          20   Male 144640
## 85   85      Prof          B            17          18 Female 122960
## 86   86      Prof          B            15          14   Male 132825
## 87   87      Prof          B            37          37   Male 152708
## 89   89      Prof          B            25          25   Male 172272
## 90   90 AssocProf          B             9           7   Male 107008
## 91   91  AsstProf          B            10           5 Female  97032
## 92   92 AssocProf          B            10           7   Male 105128
## 93   93 AssocProf          B            10           7   Male 105631
## 94   94      Prof          B            38          38   Male 166024
## 95   95      Prof          B            21          20   Male 123683
## 97   97 AssocProf          B            17          12   Male  95611
## 98   98      Prof          B            13           7   Male 129676
## 99   99      Prof          B            30          14   Male 102235
## 100 100      Prof          B            41          26   Male 106689
## 101 101      Prof          B            42          25   Male 133217
## 102 102      Prof          B            28          23   Male 126933
## 103 103      Prof          B            16           5   Male 153303
## 104 104      Prof          B            20          14 Female 127512
## 105 105 AssocProf          A            18          10   Male  83850
## 106 106      Prof          A            31          28   Male 113543
## 107 107 AssocProf          A            11           8   Male  82099
## 108 108 AssocProf          A            10           8   Male  82600
## 109 109 AssocProf          A            15           8   Male  81500
## 110 110      Prof          A            40          31   Male 131205
## 111 111      Prof          A            20          16   Male 112429
## 112 112 AssocProf          A            19          16   Male  82100
## 114 114      Prof          A            37          37   Male 104279
## 116 116      Prof          A            21           9   Male 120806
## 117 117      Prof          A            30          29   Male 148500
## 118 118      Prof          A            39          36   Male 117515
## 120 120  AsstProf          A             5           3 Female  73500
## 121 121      Prof          A            14          14   Male 115313
## 122 122      Prof          A            32          32   Male 124309
## 123 123      Prof          A            24          22   Male  97262
## 124 124 AssocProf          A            25          22 Female  62884
## 125 125      Prof          A            24          22   Male  96614
## 126 126      Prof          A            54          49   Male  78162
## 127 127      Prof          A            28          26   Male 155500
## 129 129      Prof          A            32          30   Male 113278
## 131 131 AssocProf          A            11           9   Male  83001
## 132 132      Prof          A            56          57   Male  76840
## 133 133 AssocProf          A            10           8 Female  77500
## 135 135      Prof          A            35          25   Male 168635
## 136 136      Prof          A            20          18   Male 136000
## 137 137      Prof          A            16          14   Male 108262
## 138 138      Prof          A            17          14   Male 105668
## 139 139 AssocProf          A            10           7   Male  73877
## 140 140      Prof          A            21          18   Male 152664
## 141 141 AssocProf          A            14           8   Male 100102
## 142 142 AssocProf          A            15          10   Male  81500
## 143 143      Prof          A            19          11   Male 106608
## 144 144  AsstProf          B             3           3   Male  89942
## 145 145      Prof          B            27          27   Male 112696
## 146 146      Prof          B            28          28   Male 119015
## 147 147  AsstProf          B             4           4   Male  92000
## 148 148      Prof          B            27          27   Male 156938
## 149 149      Prof          B            36          26 Female 144651
## 150 150  AsstProf          B             4           3   Male  95079
## 151 151      Prof          B            14          12   Male 128148
## 152 152  AsstProf          B             4           4   Male  92000
## 153 153      Prof          B            21           9   Male 111168
## 154 154 AssocProf          B            12          10 Female 103994
## 156 156      Prof          B            21          21   Male 118971
## 157 157 AssocProf          B            12          18   Male 113341
## 159 159 AssocProf          B             6           6   Male  95408
## 160 160      Prof          B            15          16   Male 137167
## 162 162      Prof          B            26          19   Male 176500
## 163 163 AssocProf          B            22           7   Male  98510
## 164 164  AsstProf          B             3           3   Male  89942
## 166 166      Prof          B            21           8   Male 105890
## 167 167      Prof          B            16          16   Male 167284
## 168 168      Prof          B            18          19   Male 130664
## 169 169 AssocProf          B             8           6   Male 101210
## 170 170      Prof          B            25          18   Male 181257
## 171 171  AsstProf          B             5           5   Male  91227
## 172 172      Prof          B            19          19   Male 151575
## 173 173      Prof          B            37          24   Male  93164
## 174 174      Prof          B            20          20   Male 134185
## 175 175 AssocProf          B            17           6   Male 105000
## 176 176      Prof          B            28          25   Male 111751
## 177 177 AssocProf          B            10           7   Male  95436
## 178 178 AssocProf          B            13           9   Male 100944
## 179 179      Prof          B            27          14   Male 147349
## 180 180  AsstProf          B             3           3 Female  92000
## 181 181      Prof          B            11          11   Male 142467
## 182 182      Prof          B            18           5   Male 141136
## 183 183 AssocProf          B             8           8   Male 100000
## 184 184      Prof          B            26          22   Male 150000
## 185 185      Prof          B            23          23   Male 101000
## 186 186      Prof          B            33          30   Male 134000
## 187 187 AssocProf          B            13          10 Female 103750
## 188 188      Prof          B            18          10   Male 107500
## 189 189 AssocProf          B            28          28   Male 106300
## 190 190      Prof          B            25          19   Male 153750
## 191 191      Prof          B            22           9   Male 180000
## 192 192      Prof          B            43          22   Male 133700
## 193 193      Prof          B            19          18   Male 122100
## 194 194 AssocProf          B            19          19   Male  86250
## 195 195 AssocProf          B            48          53   Male  90000
## 196 196 AssocProf          B             9           7   Male 113600
## 197 197  AsstProf          B             4           4   Male  92700
## 198 198  AsstProf          B             4           4   Male  92000
## 199 199      Prof          B            34          33   Male 189409
## 200 200      Prof          B            38          22   Male 114500
## 201 201  AsstProf          B             4           4   Male  92700
## 202 202      Prof          B            40          40   Male 119700
## 203 203      Prof          B            28          17   Male 160400
## 204 204      Prof          B            17          17   Male 152500
## 205 205      Prof          B            19           5   Male 165000
## 207 207      Prof          B            35          33   Male 162200
## 208 208      Prof          B            18          18   Male 120000
## 210 210      Prof          B            20          20   Male 163200
## 211 211  AsstProf          B             4           3   Male  91000
## 212 212      Prof          B            39          39   Male 111350
## 213 213      Prof          B            15           7   Male 128400
## 214 214      Prof          B            26          19   Male 126200
## 216 216      Prof          B            16          11   Male 145350
## 217 217      Prof          B            15          11   Male 146000
## 218 218 AssocProf          B            29          22   Male 105350
## 219 219 AssocProf          B            14           7 Female 109650
## 220 220      Prof          B            13          11   Male 119500
## 221 221      Prof          B            21          21   Male 170000
## 222 222      Prof          B            23          10   Male 145200
## 223 223 AssocProf          B            13           6   Male 107150
## 224 224      Prof          B            34          20   Male 129600
## 225 225      Prof          A            38          35   Male  87800
## 226 226      Prof          A            20          20   Male 122400
## 228 228 AssocProf          A             9           7   Male  70000
## 229 229      Prof          A            16          11   Male  88175
## 230 230      Prof          A            39          38   Male 133900
## 231 231      Prof          A            29          27 Female  91000
## 232 232 AssocProf          A            26          24 Female  73300
## 233 233      Prof          A            38          19   Male 148750
## 234 234      Prof          A            36          19 Female 117555
## 235 235  AsstProf          A             8           3   Male  69700
## 236 236      Prof          A            28          17   Male  81700
## 237 237      Prof          A            25          25   Male 114000
## 238 238  AsstProf          A             7           6 Female  63100
## 239 239      Prof          A            46          40   Male  77202
## 240 240      Prof          A            19           6   Male  96200
## 241 241  AsstProf          A             5           3   Male  69200
## 242 242      Prof          A            31          30   Male 122875
## 243 243      Prof          A            38          37   Male 102600
## 244 244      Prof          A            23          23   Male 108200
## 245 245      Prof          A            19          23   Male  84273
## 246 246      Prof          A            17          11 Female  90450
## 247 247      Prof          A            30          23   Male  91100
## 248 248      Prof          A            21          18   Male 101100
## 249 249      Prof          A            28          23   Male 128800
## 250 250      Prof          A            29           7   Male 204000
## 251 251      Prof          A            39          39   Male 109000
## 252 252      Prof          A            20           8   Male 102000
## 253 253      Prof          A            31          12   Male 132000
## 255 255      Prof          A            28           7 Female 116450
## 256 256 AssocProf          A            12           8   Male  83000
## 257 257      Prof          A            22          22   Male 140300
## 258 258 AssocProf          A            30          23   Male  74000
## 259 259  AsstProf          A             9           3   Male  73800
## 260 260      Prof          A            32          30   Male  92550
## 261 261 AssocProf          A            41          33   Male  88600
## 262 262      Prof          A            45          45   Male 107550
## 263 263      Prof          A            31          26   Male 121200
## 264 264      Prof          A            31          31   Male 126000
## 265 265      Prof          A            37          35   Male  99000
## 266 266      Prof          A            36          30   Male 134800
## 267 267      Prof          A            43          43   Male 143940
## 268 268      Prof          A            14          10   Male 104350
## 269 269      Prof          A            47          44   Male  89650
## 270 270      Prof          A            13           7   Male 103700
## 271 271      Prof          A            42          40   Male 143250
## 272 272      Prof          A            42          18   Male 194800
## 274 274  AsstProf          A             8           4   Male  74000
## 275 275  AsstProf          A             8           3 Female  78500
## 276 276      Prof          A            12           6   Male  93000
## 277 277      Prof          A            52          48   Male 107200
## 278 278      Prof          A            31          27   Male 163200
## 279 279      Prof          A            24          18   Male 107100
## 280 280      Prof          A            46          46   Male 100600
## 281 281      Prof          A            39          38   Male 136500
## 282 282      Prof          A            37          27   Male 103600
## 283 283      Prof          A            51          51   Male  57800
## 284 284      Prof          A            45          43   Male 155865
## 285 285 AssocProf          A             8           6   Male  88650
## 286 286 AssocProf          A            49          49   Male  81800
## 287 287      Prof          A            28          27   Male 115800
## 289 289      Prof          A            29          27   Male 150500
## 290 290  AsstProf          A             8           5   Male  74000
## 291 291      Prof          A            33           7   Male 174500
## 292 292      Prof          A            32          28   Male 168500
## 293 293      Prof          A            39           9   Male 183800
## 295 295      Prof          A            19           7   Male 107300
## 296 296      Prof          A            40          36   Male  97150
## 297 297      Prof          A            18          18   Male 126300
## 298 298      Prof          A            17          11   Male 148800
## 299 299      Prof          A            49          43   Male  72300
## 300 300 AssocProf          A            45          39   Male  70700
## 301 301      Prof          A            39          36   Male  88600
## 302 302      Prof          A            27          16   Male 127100
## 303 303      Prof          A            28          13   Male 170500
## 304 304      Prof          A            14           4   Male 105260
## 305 305      Prof          A            46          44   Male 144050
## 306 306      Prof          A            33          31   Male 111350
## 307 307  AsstProf          A             7           4   Male  74500
## 308 308      Prof          A            31          28   Male 122500
## 310 310      Prof          A            22          15   Male 166800
## 311 311      Prof          A            20           7   Male  92050
## 312 312      Prof          A            14           9   Male 108100
## 313 313      Prof          A            29          19   Male  94350
## 314 314      Prof          A            35          35   Male 100351
## 315 315      Prof          A            22           6   Male 146800
## 316 316  AsstProf          B             6           3   Male  84716
## 317 317 AssocProf          B            12           9 Female  71065
## 318 318      Prof          B            46          45   Male  67559
## 319 319      Prof          B            16          16   Male 134550
## 320 320      Prof          B            16          15   Male 135027
## 321 321      Prof          B            24          23   Male 104428
## 322 322 AssocProf          B             9           9   Male  95642
## 323 323 AssocProf          B            13          11   Male 126431
## 324 324      Prof          B            24          15 Female 161101
## 325 325      Prof          B            30          31   Male 162221
## 326 326  AsstProf          B             8           4   Male  84500
## 327 327      Prof          B            23          15   Male 124714
## 328 328      Prof          B            37          37   Male 151650
## 329 329 AssocProf          B            10          10   Male  99247
## 330 330      Prof          B            23          23   Male 134778
## 331 331      Prof          B            49          60   Male 192253
## 332 332      Prof          B            20           9   Male 116518
## 333 333      Prof          B            18          10 Female 105450
## 334 334      Prof          B            33          19   Male 145098
## 335 335 AssocProf          B            19           6 Female 104542
## 336 336      Prof          B            36          38   Male 151445
## 337 337      Prof          B            35          23   Male  98053
## 338 338      Prof          B            13          12   Male 145000
## 339 339      Prof          B            32          25   Male 128464
## 340 340      Prof          B            37          15   Male 137317
## 341 341      Prof          B            13          11   Male 106231
## 342 342      Prof          B            17          17 Female 124312
## 343 343      Prof          B            38          38   Male 114596
## 344 344      Prof          B            31          31   Male 162150
## 345 345      Prof          B            32          35   Male 150376
## 346 346      Prof          B            15          10   Male 107986
## 347 347      Prof          B            41          27   Male 142023
## 348 348      Prof          B            39          33   Male 128250
## 349 349  AsstProf          B             4           3   Male  80139
## 350 350      Prof          B            27          28   Male 144309
## 351 351      Prof          B            56          49   Male 186960
## 352 352      Prof          B            38          38   Male  93519
## 353 353      Prof          B            26          27   Male 142500
## 354 354      Prof          B            22          20   Male 138000
## 356 356      Prof          B            25          21   Male 145028
## 357 357      Prof          A            49          40   Male  88709
## 358 358      Prof          A            39          35   Male 107309
## 359 359      Prof          A            28          14 Female 109954
## 360 360  AsstProf          A            11           4   Male  78785
## 361 361      Prof          A            14          11   Male 121946
## 362 362      Prof          A            23          15 Female 109646
## 363 363      Prof          A            30          30   Male 138771
## 364 364 AssocProf          A            20          17   Male  81285
## 365 365      Prof          A            43          43   Male 205500
## 366 366      Prof          A            43          40   Male 101036
## 367 367      Prof          A            15          10   Male 115435
## 369 369      Prof          A            35          30   Male 131950
## 370 370      Prof          A            33          31   Male 134690
## 371 371 AssocProf          A            13           8   Male  78182
## 372 372      Prof          A            23          20   Male 110515
## 373 373      Prof          A            12           7   Male 109707
## 374 374      Prof          A            30          26   Male 136660
## 375 375      Prof          A            27          19   Male 103275
## 376 376      Prof          A            28          26   Male 103649
## 378 378  AsstProf          A             6           3   Male  77081
## 379 379      Prof          A            38          38   Male 150680
## 380 380 AssocProf          A            11           8   Male 104121
## 381 381  AsstProf          A             8           3   Male  75996
## 382 382      Prof          A            27          23   Male 172505
## 383 383 AssocProf          A             8           5   Male  86895
## 384 384      Prof          A            44          44   Male 105000
## 385 385      Prof          A            27          21   Male 125192
## 386 386      Prof          A            15           9   Male 114330
## 387 387      Prof          A            29          27   Male 139219
## 388 388      Prof          A            29          15   Male 109305
## 389 389      Prof          A            38          36   Male 119450
## 390 390      Prof          A            33          18   Male 186023
## 391 391      Prof          A            40          19   Male 166605
## 392 392      Prof          A            30          19   Male 151292
## 393 393      Prof          A            33          30   Male 103106
## 394 394      Prof          A            31          19   Male 150564
## 395 395      Prof          A            42          25   Male 101738
## 396 396      Prof          A            25          15   Male  95329
## 397 397  AsstProf          A             8           4   Male  81035
##     Pro_Rata_Salary
## 1                NA
## 2                NA
## 3                NA
## 4                NA
## 5                NA
## 6                NA
## 7                NA
## 8                NA
## 9                NA
## 10               NA
## 11               NA
## 15               NA
## 16               NA
## 17               NA
## 18               NA
## 19               NA
## 20               NA
## 21               NA
## 22               NA
## 23               NA
## 24               NA
## 25               NA
## 26               NA
## 27               NA
## 28               NA
## 30               NA
## 31               NA
## 33               NA
## 37               NA
## 38               NA
## 39               NA
## 40               NA
## 42               NA
## 43               NA
## 44               NA
## 45               NA
## 46               NA
## 47               NA
## 48               NA
## 49               NA
## 51               NA
## 52               NA
## 53               NA
## 54               NA
## 55               NA
## 56               NA
## 57               NA
## 58               NA
## 59               NA
## 60               NA
## 61               NA
## 63               NA
## 64               NA
## 65               NA
## 66               NA
## 67               NA
## 68               NA
## 69               NA
## 70               NA
## 72               NA
## 73               NA
## 74               NA
## 75               NA
## 76               NA
## 77               NA
## 78               NA
## 81               NA
## 82               NA
## 83               NA
## 85               NA
## 86               NA
## 87               NA
## 89               NA
## 90               NA
## 91               NA
## 92               NA
## 93               NA
## 94               NA
## 95               NA
## 97               NA
## 98               NA
## 99               NA
## 100              NA
## 101              NA
## 102              NA
## 103              NA
## 104              NA
## 105              NA
## 106              NA
## 107              NA
## 108              NA
## 109              NA
## 110              NA
## 111              NA
## 112              NA
## 114              NA
## 116              NA
## 117              NA
## 118              NA
## 120              NA
## 121              NA
## 122              NA
## 123              NA
## 124              NA
## 125              NA
## 126              NA
## 127              NA
## 129              NA
## 131              NA
## 132              NA
## 133              NA
## 135              NA
## 136              NA
## 137              NA
## 138              NA
## 139              NA
## 140              NA
## 141              NA
## 142              NA
## 143              NA
## 144              NA
## 145              NA
## 146              NA
## 147              NA
## 148              NA
## 149              NA
## 150              NA
## 151              NA
## 152              NA
## 153              NA
## 154              NA
## 156              NA
## 157              NA
## 159              NA
## 160              NA
## 162              NA
## 163              NA
## 164              NA
## 166              NA
## 167              NA
## 168              NA
## 169              NA
## 170              NA
## 171              NA
## 172              NA
## 173              NA
## 174              NA
## 175              NA
## 176              NA
## 177              NA
## 178              NA
## 179              NA
## 180              NA
## 181              NA
## 182              NA
## 183              NA
## 184              NA
## 185              NA
## 186              NA
## 187              NA
## 188              NA
## 189              NA
## 190              NA
## 191              NA
## 192              NA
## 193              NA
## 194              NA
## 195              NA
## 196              NA
## 197              NA
## 198              NA
## 199              NA
## 200              NA
## 201              NA
## 202              NA
## 203              NA
## 204              NA
## 205              NA
## 207              NA
## 208              NA
## 210              NA
## 211              NA
## 212              NA
## 213              NA
## 214              NA
## 216              NA
## 217              NA
## 218              NA
## 219              NA
## 220              NA
## 221              NA
## 222              NA
## 223              NA
## 224              NA
## 225              NA
## 226              NA
## 228              NA
## 229              NA
## 230              NA
## 231              NA
## 232              NA
## 233              NA
## 234              NA
## 235              NA
## 236              NA
## 237              NA
## 238              NA
## 239              NA
## 240              NA
## 241              NA
## 242              NA
## 243              NA
## 244              NA
## 245              NA
## 246              NA
## 247              NA
## 248              NA
## 249              NA
## 250              NA
## 251              NA
## 252              NA
## 253              NA
## 255              NA
## 256              NA
## 257              NA
## 258              NA
## 259              NA
## 260              NA
## 261              NA
## 262              NA
## 263              NA
## 264              NA
## 265              NA
## 266              NA
## 267              NA
## 268              NA
## 269              NA
## 270              NA
## 271              NA
## 272              NA
## 274              NA
## 275              NA
## 276              NA
## 277              NA
## 278              NA
## 279              NA
## 280              NA
## 281              NA
## 282              NA
## 283              NA
## 284              NA
## 285              NA
## 286              NA
## 287              NA
## 289              NA
## 290              NA
## 291              NA
## 292              NA
## 293              NA
## 295              NA
## 296              NA
## 297              NA
## 298              NA
## 299              NA
## 300              NA
## 301              NA
## 302              NA
## 303              NA
## 304              NA
## 305              NA
## 306              NA
## 307              NA
## 308              NA
## 310              NA
## 311              NA
## 312              NA
## 313              NA
## 314              NA
## 315              NA
## 316              NA
## 317              NA
## 318              NA
## 319              NA
## 320              NA
## 321              NA
## 322              NA
## 323              NA
## 324              NA
## 325              NA
## 326              NA
## 327              NA
## 328              NA
## 329              NA
## 330              NA
## 331              NA
## 332              NA
## 333              NA
## 334              NA
## 335              NA
## 336              NA
## 337              NA
## 338              NA
## 339              NA
## 340              NA
## 341              NA
## 342              NA
## 343              NA
## 344              NA
## 345              NA
## 346              NA
## 347              NA
## 348              NA
## 349              NA
## 350              NA
## 351              NA
## 352              NA
## 353              NA
## 354              NA
## 356              NA
## 357              NA
## 358              NA
## 359              NA
## 360              NA
## 361              NA
## 362              NA
## 363              NA
## 364              NA
## 365              NA
## 366              NA
## 367              NA
## 369              NA
## 370              NA
## 371              NA
## 372              NA
## 373              NA
## 374              NA
## 375              NA
## 376              NA
## 378              NA
## 379              NA
## 380              NA
## 381              NA
## 382              NA
## 383              NA
## 384              NA
## 385              NA
## 386              NA
## 387              NA
## 388              NA
## 389              NA
## 390              NA
## 391              NA
## 392              NA
## 393              NA
## 394              NA
## 395              NA
## 396              NA
## 397              NA
Salaries_Service_Years$Pro_Rata_Salary <- Salaries_Service_Years$salary/Salaries_Service_Years$yrs.service # I just created values for the new column
Salaries_Service_Years # View again, New column with values
##       X      rank discipline yrs.since.phd yrs.service    sex salary
## 1     1      Prof          B            19          18   Male 139750
## 2     2      Prof          B            20          16   Male 173200
## 3     3  AsstProf          B             4           3   Male  79750
## 4     4      Prof          B            45          39   Male 115000
## 5     5      Prof          B            40          41   Male 141500
## 6     6 AssocProf          B             6           6   Male  97000
## 7     7      Prof          B            30          23   Male 175000
## 8     8      Prof          B            45          45   Male 147765
## 9     9      Prof          B            21          20   Male 119250
## 10   10      Prof          B            18          18 Female 129000
## 11   11 AssocProf          B            12           8   Male 119800
## 15   15      Prof          B            20          18   Male 104800
## 16   16      Prof          B            12           3   Male 117150
## 17   17      Prof          B            19          20   Male 101000
## 18   18      Prof          A            38          34   Male 103450
## 19   19      Prof          A            37          23   Male 124750
## 20   20      Prof          A            39          36 Female 137000
## 21   21      Prof          A            31          26   Male  89565
## 22   22      Prof          A            36          31   Male 102580
## 23   23      Prof          A            34          30   Male  93904
## 24   24      Prof          A            24          19   Male 113068
## 25   25 AssocProf          A            13           8 Female  74830
## 26   26      Prof          A            21           8   Male 106294
## 27   27      Prof          A            35          23   Male 134885
## 28   28  AsstProf          B             5           3   Male  82379
## 30   30      Prof          B            12           8   Male 118223
## 31   31      Prof          B            20           4   Male 132261
## 33   33      Prof          B            13           9   Male 117256
## 37   37      Prof          B            22          21   Male 155750
## 38   38  AsstProf          B             7           4   Male  86373
## 39   39      Prof          B            41          31   Male 125196
## 40   40 AssocProf          B             9           9   Male 100938
## 42   42 AssocProf          B            23          23   Male  93418
## 43   43      Prof          B            40          27   Male 101299
## 44   44      Prof          B            38          38   Male 231545
## 45   45      Prof          B            19          19   Male  94384
## 46   46      Prof          B            25          15   Male 114778
## 47   47      Prof          B            40          28   Male  98193
## 48   48      Prof          B            23          19 Female 151768
## 49   49      Prof          B            25          25 Female 140096
## 51   51      Prof          B            28          28   Male 126621
## 52   52      Prof          B            12          11   Male 108875
## 53   53  AsstProf          B            11           3 Female  74692
## 54   54      Prof          B            16           9   Male 106639
## 55   55 AssocProf          B            12          11   Male 103760
## 56   56 AssocProf          B            14           5   Male  83900
## 57   57      Prof          B            23          21   Male 117704
## 58   58 AssocProf          B             9           8   Male  90215
## 59   59 AssocProf          B            10           9   Male 100135
## 60   60  AsstProf          B             8           3   Male  75044
## 61   61 AssocProf          B             9           8   Male  90304
## 63   63      Prof          B            33          31   Male 109785
## 64   64 AssocProf          B            11          11 Female 103613
## 65   65  AsstProf          B             4           3   Male  68404
## 66   66 AssocProf          B             9           8   Male 100522
## 67   67      Prof          B            22          12   Male 101000
## 68   68      Prof          B            35          31   Male  99418
## 69   69      Prof          B            17          17 Female 111512
## 70   70      Prof          B            28          36   Male  91412
## 72   72      Prof          B            45          45   Male 146856
## 73   73      Prof          B            29          19   Male 100131
## 74   74      Prof          B            35          34   Male  92391
## 75   75      Prof          B            28          23   Male 113398
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## 216 216      Prof          B            16          11   Male 145350
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## 219 219 AssocProf          B            14           7 Female 109650
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## 345 345      Prof          B            32          35   Male 150376
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## 1          7763.889
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## 347        5260.111
## 348        3886.364
## 349       26713.000
## 350        5153.893
## 351        3815.510
## 352        2461.026
## 353        5277.778
## 354        6900.000
## 356        6906.095
## 357        2217.725
## 358        3065.971
## 359        7853.857
## 360       19696.250
## 361       11086.000
## 362        7309.733
## 363        4625.700
## 364        4781.471
## 365        4779.070
## 366        2525.900
## 367       11543.500
## 369        4398.333
## 370        4344.839
## 371        9772.750
## 372        5525.750
## 373       15672.429
## 374        5256.154
## 375        5435.526
## 376        3986.500
## 378       25693.667
## 379        3965.263
## 380       13015.125
## 381       25332.000
## 382        7500.217
## 383       17379.000
## 384        2386.364
## 385        5961.524
## 386       12703.333
## 387        5156.259
## 388        7287.000
## 389        3318.056
## 390       10334.611
## 391        8768.684
## 392        7962.737
## 393        3436.867
## 394        7924.421
## 395        4069.520
## 396        6355.267
## 397       20258.750

Q4. Use the summary function to create an overview of yournew data frame.

The print the mean and median for the same two attributes. Please compare.

summary(Salaries_Service_Years) # Overview of new data frame
##        X                rank     discipline yrs.since.phd   yrs.service   
##  Min.   :  1.0   AssocProf: 61   A:167      Min.   : 3.0   Min.   : 3.00  
##  1st Qu.:107.2   AsstProf : 35   B:191      1st Qu.:14.0   1st Qu.: 8.25  
##  Median :207.5   Prof     :262              Median :23.0   Median :18.00  
##  Mean   :205.0                              Mean   :24.1   Mean   :19.41  
##  3rd Qu.:303.8                              3rd Qu.:33.0   3rd Qu.:27.00  
##  Max.   :397.0                              Max.   :56.0   Max.   :60.00  
##      sex          salary       Pro_Rata_Salary
##  Female: 33   Min.   : 57800   Min.   : 1133  
##  Male  :325   1st Qu.: 95142   1st Qu.: 4371  
##               Median :110235   Median : 7311  
##               Mean   :116713   Mean   : 9689  
##               3rd Qu.:136375   3rd Qu.:12463  
##               Max.   :231545   Max.   :50160
mean(Salaries_Service_Years$salary)# The mean salary is now $116,713.10
## [1] 116713.1
median(Salaries_Service_Years$salary)# The median salary is now $110,234.50
## [1] 110234.5
mean(Salaries_Service_Years$yrs.service)# The average year of service is now ~ 19.4 years.
## [1] 19.41341
median(Salaries_Service_Years$yrs.service) # The median year of service is now 18 years
## [1] 18

With the previous data frame.

The mean salary was $113,706.50

The median salary was $107,300

The average year of service was 17.6 corresponding to 17 years and 6 months.

The median year of service was 16 years

Q5. For at least 3 values in a column please rename so that every value in that column is renamed.

For example, suppose I have 20 values of the letter “e”in one column.

Rename those values so that all 20 would show as “excellent”.

Salaries_Service_Years$rank <- gsub("Prof", "Professor", Salaries_Service_Years$rank) # Renaming Prof to Professor in the rank variable (Column)
Salaries_Service_Years$rank <- gsub("AssocProf", "Associate_Prof", Salaries_Service_Years$rank) # Renaming AssocProf to Associate_Professor in the rank variable (Column)
Salaries_Service_Years$rank <- gsub("AsstProf", "Assistant_Prof", Salaries_Service_Years$rank) # Renaming AsstProf to Assistant_Professor in the rank variable (Column)
Salaries_Service_Years
##       X                rank discipline yrs.since.phd yrs.service    sex
## 1     1           Professor          B            19          18   Male
## 2     2           Professor          B            20          16   Male
## 3     3 Assistant_Professor          B             4           3   Male
## 4     4           Professor          B            45          39   Male
## 5     5           Professor          B            40          41   Male
## 6     6 Associate_Professor          B             6           6   Male
## 7     7           Professor          B            30          23   Male
## 8     8           Professor          B            45          45   Male
## 9     9           Professor          B            21          20   Male
## 10   10           Professor          B            18          18 Female
## 11   11 Associate_Professor          B            12           8   Male
## 15   15           Professor          B            20          18   Male
## 16   16           Professor          B            12           3   Male
## 17   17           Professor          B            19          20   Male
## 18   18           Professor          A            38          34   Male
## 19   19           Professor          A            37          23   Male
## 20   20           Professor          A            39          36 Female
## 21   21           Professor          A            31          26   Male
## 22   22           Professor          A            36          31   Male
## 23   23           Professor          A            34          30   Male
## 24   24           Professor          A            24          19   Male
## 25   25 Associate_Professor          A            13           8 Female
## 26   26           Professor          A            21           8   Male
## 27   27           Professor          A            35          23   Male
## 28   28 Assistant_Professor          B             5           3   Male
## 30   30           Professor          B            12           8   Male
## 31   31           Professor          B            20           4   Male
## 33   33           Professor          B            13           9   Male
## 37   37           Professor          B            22          21   Male
## 38   38 Assistant_Professor          B             7           4   Male
## 39   39           Professor          B            41          31   Male
## 40   40 Associate_Professor          B             9           9   Male
## 42   42 Associate_Professor          B            23          23   Male
## 43   43           Professor          B            40          27   Male
## 44   44           Professor          B            38          38   Male
## 45   45           Professor          B            19          19   Male
## 46   46           Professor          B            25          15   Male
## 47   47           Professor          B            40          28   Male
## 48   48           Professor          B            23          19 Female
## 49   49           Professor          B            25          25 Female
## 51   51           Professor          B            28          28   Male
## 52   52           Professor          B            12          11   Male
## 53   53 Assistant_Professor          B            11           3 Female
## 54   54           Professor          B            16           9   Male
## 55   55 Associate_Professor          B            12          11   Male
## 56   56 Associate_Professor          B            14           5   Male
## 57   57           Professor          B            23          21   Male
## 58   58 Associate_Professor          B             9           8   Male
## 59   59 Associate_Professor          B            10           9   Male
## 60   60 Assistant_Professor          B             8           3   Male
## 61   61 Associate_Professor          B             9           8   Male
## 63   63           Professor          B            33          31   Male
## 64   64 Associate_Professor          B            11          11 Female
## 65   65 Assistant_Professor          B             4           3   Male
## 66   66 Associate_Professor          B             9           8   Male
## 67   67           Professor          B            22          12   Male
## 68   68           Professor          B            35          31   Male
## 69   69           Professor          B            17          17 Female
## 70   70           Professor          B            28          36   Male
## 72   72           Professor          B            45          45   Male
## 73   73           Professor          B            29          19   Male
## 74   74           Professor          B            35          34   Male
## 75   75           Professor          B            28          23   Male
## 76   76 Assistant_Professor          B             8           3   Male
## 77   77           Professor          B            17           3   Male
## 78   78           Professor          B            26          19   Male
## 81   81           Professor          B            43          28   Male
## 82   82           Professor          B            17          16   Male
## 83   83           Professor          B            22          20   Male
## 85   85           Professor          B            17          18 Female
## 86   86           Professor          B            15          14   Male
## 87   87           Professor          B            37          37   Male
## 89   89           Professor          B            25          25   Male
## 90   90 Associate_Professor          B             9           7   Male
## 91   91 Assistant_Professor          B            10           5 Female
## 92   92 Associate_Professor          B            10           7   Male
## 93   93 Associate_Professor          B            10           7   Male
## 94   94           Professor          B            38          38   Male
## 95   95           Professor          B            21          20   Male
## 97   97 Associate_Professor          B            17          12   Male
## 98   98           Professor          B            13           7   Male
## 99   99           Professor          B            30          14   Male
## 100 100           Professor          B            41          26   Male
## 101 101           Professor          B            42          25   Male
## 102 102           Professor          B            28          23   Male
## 103 103           Professor          B            16           5   Male
## 104 104           Professor          B            20          14 Female
## 105 105 Associate_Professor          A            18          10   Male
## 106 106           Professor          A            31          28   Male
## 107 107 Associate_Professor          A            11           8   Male
## 108 108 Associate_Professor          A            10           8   Male
## 109 109 Associate_Professor          A            15           8   Male
## 110 110           Professor          A            40          31   Male
## 111 111           Professor          A            20          16   Male
## 112 112 Associate_Professor          A            19          16   Male
## 114 114           Professor          A            37          37   Male
## 116 116           Professor          A            21           9   Male
## 117 117           Professor          A            30          29   Male
## 118 118           Professor          A            39          36   Male
## 120 120 Assistant_Professor          A             5           3 Female
## 121 121           Professor          A            14          14   Male
## 122 122           Professor          A            32          32   Male
## 123 123           Professor          A            24          22   Male
## 124 124 Associate_Professor          A            25          22 Female
## 125 125           Professor          A            24          22   Male
## 126 126           Professor          A            54          49   Male
## 127 127           Professor          A            28          26   Male
## 129 129           Professor          A            32          30   Male
## 131 131 Associate_Professor          A            11           9   Male
## 132 132           Professor          A            56          57   Male
## 133 133 Associate_Professor          A            10           8 Female
## 135 135           Professor          A            35          25   Male
## 136 136           Professor          A            20          18   Male
## 137 137           Professor          A            16          14   Male
## 138 138           Professor          A            17          14   Male
## 139 139 Associate_Professor          A            10           7   Male
## 140 140           Professor          A            21          18   Male
## 141 141 Associate_Professor          A            14           8   Male
## 142 142 Associate_Professor          A            15          10   Male
## 143 143           Professor          A            19          11   Male
## 144 144 Assistant_Professor          B             3           3   Male
## 145 145           Professor          B            27          27   Male
## 146 146           Professor          B            28          28   Male
## 147 147 Assistant_Professor          B             4           4   Male
## 148 148           Professor          B            27          27   Male
## 149 149           Professor          B            36          26 Female
## 150 150 Assistant_Professor          B             4           3   Male
## 151 151           Professor          B            14          12   Male
## 152 152 Assistant_Professor          B             4           4   Male
## 153 153           Professor          B            21           9   Male
## 154 154 Associate_Professor          B            12          10 Female
## 156 156           Professor          B            21          21   Male
## 157 157 Associate_Professor          B            12          18   Male
## 159 159 Associate_Professor          B             6           6   Male
## 160 160           Professor          B            15          16   Male
## 162 162           Professor          B            26          19   Male
## 163 163 Associate_Professor          B            22           7   Male
## 164 164 Assistant_Professor          B             3           3   Male
## 166 166           Professor          B            21           8   Male
## 167 167           Professor          B            16          16   Male
## 168 168           Professor          B            18          19   Male
## 169 169 Associate_Professor          B             8           6   Male
## 170 170           Professor          B            25          18   Male
## 171 171 Assistant_Professor          B             5           5   Male
## 172 172           Professor          B            19          19   Male
## 173 173           Professor          B            37          24   Male
## 174 174           Professor          B            20          20   Male
## 175 175 Associate_Professor          B            17           6   Male
## 176 176           Professor          B            28          25   Male
## 177 177 Associate_Professor          B            10           7   Male
## 178 178 Associate_Professor          B            13           9   Male
## 179 179           Professor          B            27          14   Male
## 180 180 Assistant_Professor          B             3           3 Female
## 181 181           Professor          B            11          11   Male
## 182 182           Professor          B            18           5   Male
## 183 183 Associate_Professor          B             8           8   Male
## 184 184           Professor          B            26          22   Male
## 185 185           Professor          B            23          23   Male
## 186 186           Professor          B            33          30   Male
## 187 187 Associate_Professor          B            13          10 Female
## 188 188           Professor          B            18          10   Male
## 189 189 Associate_Professor          B            28          28   Male
## 190 190           Professor          B            25          19   Male
## 191 191           Professor          B            22           9   Male
## 192 192           Professor          B            43          22   Male
## 193 193           Professor          B            19          18   Male
## 194 194 Associate_Professor          B            19          19   Male
## 195 195 Associate_Professor          B            48          53   Male
## 196 196 Associate_Professor          B             9           7   Male
## 197 197 Assistant_Professor          B             4           4   Male
## 198 198 Assistant_Professor          B             4           4   Male
## 199 199           Professor          B            34          33   Male
## 200 200           Professor          B            38          22   Male
## 201 201 Assistant_Professor          B             4           4   Male
## 202 202           Professor          B            40          40   Male
## 203 203           Professor          B            28          17   Male
## 204 204           Professor          B            17          17   Male
## 205 205           Professor          B            19           5   Male
## 207 207           Professor          B            35          33   Male
## 208 208           Professor          B            18          18   Male
## 210 210           Professor          B            20          20   Male
## 211 211 Assistant_Professor          B             4           3   Male
## 212 212           Professor          B            39          39   Male
## 213 213           Professor          B            15           7   Male
## 214 214           Professor          B            26          19   Male
## 216 216           Professor          B            16          11   Male
## 217 217           Professor          B            15          11   Male
## 218 218 Associate_Professor          B            29          22   Male
## 219 219 Associate_Professor          B            14           7 Female
## 220 220           Professor          B            13          11   Male
## 221 221           Professor          B            21          21   Male
## 222 222           Professor          B            23          10   Male
## 223 223 Associate_Professor          B            13           6   Male
## 224 224           Professor          B            34          20   Male
## 225 225           Professor          A            38          35   Male
## 226 226           Professor          A            20          20   Male
## 228 228 Associate_Professor          A             9           7   Male
## 229 229           Professor          A            16          11   Male
## 230 230           Professor          A            39          38   Male
## 231 231           Professor          A            29          27 Female
## 232 232 Associate_Professor          A            26          24 Female
## 233 233           Professor          A            38          19   Male
## 234 234           Professor          A            36          19 Female
## 235 235 Assistant_Professor          A             8           3   Male
## 236 236           Professor          A            28          17   Male
## 237 237           Professor          A            25          25   Male
## 238 238 Assistant_Professor          A             7           6 Female
## 239 239           Professor          A            46          40   Male
## 240 240           Professor          A            19           6   Male
## 241 241 Assistant_Professor          A             5           3   Male
## 242 242           Professor          A            31          30   Male
## 243 243           Professor          A            38          37   Male
## 244 244           Professor          A            23          23   Male
## 245 245           Professor          A            19          23   Male
## 246 246           Professor          A            17          11 Female
## 247 247           Professor          A            30          23   Male
## 248 248           Professor          A            21          18   Male
## 249 249           Professor          A            28          23   Male
## 250 250           Professor          A            29           7   Male
## 251 251           Professor          A            39          39   Male
## 252 252           Professor          A            20           8   Male
## 253 253           Professor          A            31          12   Male
## 255 255           Professor          A            28           7 Female
## 256 256 Associate_Professor          A            12           8   Male
## 257 257           Professor          A            22          22   Male
## 258 258 Associate_Professor          A            30          23   Male
## 259 259 Assistant_Professor          A             9           3   Male
## 260 260           Professor          A            32          30   Male
## 261 261 Associate_Professor          A            41          33   Male
## 262 262           Professor          A            45          45   Male
## 263 263           Professor          A            31          26   Male
## 264 264           Professor          A            31          31   Male
## 265 265           Professor          A            37          35   Male
## 266 266           Professor          A            36          30   Male
## 267 267           Professor          A            43          43   Male
## 268 268           Professor          A            14          10   Male
## 269 269           Professor          A            47          44   Male
## 270 270           Professor          A            13           7   Male
## 271 271           Professor          A            42          40   Male
## 272 272           Professor          A            42          18   Male
## 274 274 Assistant_Professor          A             8           4   Male
## 275 275 Assistant_Professor          A             8           3 Female
## 276 276           Professor          A            12           6   Male
## 277 277           Professor          A            52          48   Male
## 278 278           Professor          A            31          27   Male
## 279 279           Professor          A            24          18   Male
## 280 280           Professor          A            46          46   Male
## 281 281           Professor          A            39          38   Male
## 282 282           Professor          A            37          27   Male
## 283 283           Professor          A            51          51   Male
## 284 284           Professor          A            45          43   Male
## 285 285 Associate_Professor          A             8           6   Male
## 286 286 Associate_Professor          A            49          49   Male
## 287 287           Professor          A            28          27   Male
## 289 289           Professor          A            29          27   Male
## 290 290 Assistant_Professor          A             8           5   Male
## 291 291           Professor          A            33           7   Male
## 292 292           Professor          A            32          28   Male
## 293 293           Professor          A            39           9   Male
## 295 295           Professor          A            19           7   Male
## 296 296           Professor          A            40          36   Male
## 297 297           Professor          A            18          18   Male
## 298 298           Professor          A            17          11   Male
## 299 299           Professor          A            49          43   Male
## 300 300 Associate_Professor          A            45          39   Male
## 301 301           Professor          A            39          36   Male
## 302 302           Professor          A            27          16   Male
## 303 303           Professor          A            28          13   Male
## 304 304           Professor          A            14           4   Male
## 305 305           Professor          A            46          44   Male
## 306 306           Professor          A            33          31   Male
## 307 307 Assistant_Professor          A             7           4   Male
## 308 308           Professor          A            31          28   Male
## 310 310           Professor          A            22          15   Male
## 311 311           Professor          A            20           7   Male
## 312 312           Professor          A            14           9   Male
## 313 313           Professor          A            29          19   Male
## 314 314           Professor          A            35          35   Male
## 315 315           Professor          A            22           6   Male
## 316 316 Assistant_Professor          B             6           3   Male
## 317 317 Associate_Professor          B            12           9 Female
## 318 318           Professor          B            46          45   Male
## 319 319           Professor          B            16          16   Male
## 320 320           Professor          B            16          15   Male
## 321 321           Professor          B            24          23   Male
## 322 322 Associate_Professor          B             9           9   Male
## 323 323 Associate_Professor          B            13          11   Male
## 324 324           Professor          B            24          15 Female
## 325 325           Professor          B            30          31   Male
## 326 326 Assistant_Professor          B             8           4   Male
## 327 327           Professor          B            23          15   Male
## 328 328           Professor          B            37          37   Male
## 329 329 Associate_Professor          B            10          10   Male
## 330 330           Professor          B            23          23   Male
## 331 331           Professor          B            49          60   Male
## 332 332           Professor          B            20           9   Male
## 333 333           Professor          B            18          10 Female
## 334 334           Professor          B            33          19   Male
## 335 335 Associate_Professor          B            19           6 Female
## 336 336           Professor          B            36          38   Male
## 337 337           Professor          B            35          23   Male
## 338 338           Professor          B            13          12   Male
## 339 339           Professor          B            32          25   Male
## 340 340           Professor          B            37          15   Male
## 341 341           Professor          B            13          11   Male
## 342 342           Professor          B            17          17 Female
## 343 343           Professor          B            38          38   Male
## 344 344           Professor          B            31          31   Male
## 345 345           Professor          B            32          35   Male
## 346 346           Professor          B            15          10   Male
## 347 347           Professor          B            41          27   Male
## 348 348           Professor          B            39          33   Male
## 349 349 Assistant_Professor          B             4           3   Male
## 350 350           Professor          B            27          28   Male
## 351 351           Professor          B            56          49   Male
## 352 352           Professor          B            38          38   Male
## 353 353           Professor          B            26          27   Male
## 354 354           Professor          B            22          20   Male
## 356 356           Professor          B            25          21   Male
## 357 357           Professor          A            49          40   Male
## 358 358           Professor          A            39          35   Male
## 359 359           Professor          A            28          14 Female
## 360 360 Assistant_Professor          A            11           4   Male
## 361 361           Professor          A            14          11   Male
## 362 362           Professor          A            23          15 Female
## 363 363           Professor          A            30          30   Male
## 364 364 Associate_Professor          A            20          17   Male
## 365 365           Professor          A            43          43   Male
## 366 366           Professor          A            43          40   Male
## 367 367           Professor          A            15          10   Male
## 369 369           Professor          A            35          30   Male
## 370 370           Professor          A            33          31   Male
## 371 371 Associate_Professor          A            13           8   Male
## 372 372           Professor          A            23          20   Male
## 373 373           Professor          A            12           7   Male
## 374 374           Professor          A            30          26   Male
## 375 375           Professor          A            27          19   Male
## 376 376           Professor          A            28          26   Male
## 378 378 Assistant_Professor          A             6           3   Male
## 379 379           Professor          A            38          38   Male
## 380 380 Associate_Professor          A            11           8   Male
## 381 381 Assistant_Professor          A             8           3   Male
## 382 382           Professor          A            27          23   Male
## 383 383 Associate_Professor          A             8           5   Male
## 384 384           Professor          A            44          44   Male
## 385 385           Professor          A            27          21   Male
## 386 386           Professor          A            15           9   Male
## 387 387           Professor          A            29          27   Male
## 388 388           Professor          A            29          15   Male
## 389 389           Professor          A            38          36   Male
## 390 390           Professor          A            33          18   Male
## 391 391           Professor          A            40          19   Male
## 392 392           Professor          A            30          19   Male
## 393 393           Professor          A            33          30   Male
## 394 394           Professor          A            31          19   Male
## 395 395           Professor          A            42          25   Male
## 396 396           Professor          A            25          15   Male
## 397 397 Assistant_Professor          A             8           4   Male
##     salary Pro_Rata_Salary
## 1   139750        7763.889
## 2   173200       10825.000
## 3    79750       26583.333
## 4   115000        2948.718
## 5   141500        3451.220
## 6    97000       16166.667
## 7   175000        7608.696
## 8   147765        3283.667
## 9   119250        5962.500
## 10  129000        7166.667
## 11  119800       14975.000
## 15  104800        5822.222
## 16  117150       39050.000
## 17  101000        5050.000
## 18  103450        3042.647
## 19  124750        5423.913
## 20  137000        3805.556
## 21   89565        3444.808
## 22  102580        3309.032
## 23   93904        3130.133
## 24  113068        5950.947
## 25   74830        9353.750
## 26  106294       13286.750
## 27  134885        5864.565
## 28   82379       27459.667
## 30  118223       14777.875
## 31  132261       33065.250
## 33  117256       13028.444
## 37  155750        7416.667
## 38   86373       21593.250
## 39  125196        4038.581
## 40  100938       11215.333
## 42   93418        4061.652
## 43  101299        3751.815
## 44  231545        6093.289
## 45   94384        4967.579
## 46  114778        7651.867
## 47   98193        3506.893
## 48  151768        7987.789
## 49  140096        5603.840
## 51  126621        4522.179
## 52  108875        9897.727
## 53   74692       24897.333
## 54  106639       11848.778
## 55  103760        9432.727
## 56   83900       16780.000
## 57  117704        5604.952
## 58   90215       11276.875
## 59  100135       11126.111
## 60   75044       25014.667
## 61   90304       11288.000
## 63  109785        3541.452
## 64  103613        9419.364
## 65   68404       22801.333
## 66  100522       12565.250
## 67  101000        8416.667
## 68   99418        3207.032
## 69  111512        6559.529
## 70   91412        2539.222
## 72  146856        3263.467
## 73  100131        5270.053
## 74   92391        2717.382
## 75  113398        4930.348
## 76   73266       24422.000
## 77  150480       50160.000
## 78  193000       10157.895
## 81  150743        5383.679
## 82  135585        8474.062
## 83  144640        7232.000
## 85  122960        6831.111
## 86  132825        9487.500
## 87  152708        4127.243
## 89  172272        6890.880
## 90  107008       15286.857
## 91   97032       19406.400
## 92  105128       15018.286
## 93  105631       15090.143
## 94  166024        4369.053
## 95  123683        6184.150
## 97   95611        7967.583
## 98  129676       18525.143
## 99  102235        7302.500
## 100 106689        4103.423
## 101 133217        5328.680
## 102 126933        5518.826
## 103 153303       30660.600
## 104 127512        9108.000
## 105  83850        8385.000
## 106 113543        4055.107
## 107  82099       10262.375
## 108  82600       10325.000
## 109  81500       10187.500
## 110 131205        4232.419
## 111 112429        7026.812
## 112  82100        5131.250
## 114 104279        2818.351
## 116 120806       13422.889
## 117 148500        5120.690
## 118 117515        3264.306
## 120  73500       24500.000
## 121 115313        8236.643
## 122 124309        3884.656
## 123  97262        4421.000
## 124  62884        2858.364
## 125  96614        4391.545
## 126  78162        1595.143
## 127 155500        5980.769
## 129 113278        3775.933
## 131  83001        9222.333
## 132  76840        1348.070
## 133  77500        9687.500
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## 136 136000        7555.556
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## 139  73877       10553.857
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## 142  81500        8150.000
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## 145 112696        4173.926
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## 361 121946       11086.000
## 362 109646        7309.733
## 363 138771        4625.700
## 364  81285        4781.471
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## 366 101036        2525.900
## 367 115435       11543.500
## 369 131950        4398.333
## 370 134690        4344.839
## 371  78182        9772.750
## 372 110515        5525.750
## 373 109707       15672.429
## 374 136660        5256.154
## 375 103275        5435.526
## 376 103649        3986.500
## 378  77081       25693.667
## 379 150680        3965.263
## 380 104121       13015.125
## 381  75996       25332.000
## 382 172505        7500.217
## 383  86895       17379.000
## 384 105000        2386.364
## 385 125192        5961.524
## 386 114330       12703.333
## 387 139219        5156.259
## 388 109305        7287.000
## 389 119450        3318.056
## 390 186023       10334.611
## 391 166605        8768.684
## 392 151292        7962.737
## 393 103106        3436.867
## 394 150564        7924.421
## 395 101738        4069.520
## 396  95329        6355.267
## 397  81035       20258.750

Q6. Display enough rows to see examples of all of steps 1-5 above.

Salaries_Service_Years[1:30, ] #30 rows displayed
##     X                rank discipline yrs.since.phd yrs.service    sex
## 1   1           Professor          B            19          18   Male
## 2   2           Professor          B            20          16   Male
## 3   3 Assistant_Professor          B             4           3   Male
## 4   4           Professor          B            45          39   Male
## 5   5           Professor          B            40          41   Male
## 6   6 Associate_Professor          B             6           6   Male
## 7   7           Professor          B            30          23   Male
## 8   8           Professor          B            45          45   Male
## 9   9           Professor          B            21          20   Male
## 10 10           Professor          B            18          18 Female
## 11 11 Associate_Professor          B            12           8   Male
## 15 15           Professor          B            20          18   Male
## 16 16           Professor          B            12           3   Male
## 17 17           Professor          B            19          20   Male
## 18 18           Professor          A            38          34   Male
## 19 19           Professor          A            37          23   Male
## 20 20           Professor          A            39          36 Female
## 21 21           Professor          A            31          26   Male
## 22 22           Professor          A            36          31   Male
## 23 23           Professor          A            34          30   Male
## 24 24           Professor          A            24          19   Male
## 25 25 Associate_Professor          A            13           8 Female
## 26 26           Professor          A            21           8   Male
## 27 27           Professor          A            35          23   Male
## 28 28 Assistant_Professor          B             5           3   Male
## 30 30           Professor          B            12           8   Male
## 31 31           Professor          B            20           4   Male
## 33 33           Professor          B            13           9   Male
## 37 37           Professor          B            22          21   Male
## 38 38 Assistant_Professor          B             7           4   Male
##    salary Pro_Rata_Salary
## 1  139750        7763.889
## 2  173200       10825.000
## 3   79750       26583.333
## 4  115000        2948.718
## 5  141500        3451.220
## 6   97000       16166.667
## 7  175000        7608.696
## 8  147765        3283.667
## 9  119250        5962.500
## 10 129000        7166.667
## 11 119800       14975.000
## 15 104800        5822.222
## 16 117150       39050.000
## 17 101000        5050.000
## 18 103450        3042.647
## 19 124750        5423.913
## 20 137000        3805.556
## 21  89565        3444.808
## 22 102580        3309.032
## 23  93904        3130.133
## 24 113068        5950.947
## 25  74830        9353.750
## 26 106294       13286.750
## 27 134885        5864.565
## 28  82379       27459.667
## 30 118223       14777.875
## 31 132261       33065.250
## 33 117256       13028.444
## 37 155750        7416.667
## 38  86373       21593.250

Q7. BONUS –place the original .csv in a github file and have R read from the link.

This will be a very useful skill as you progress in your data science education and career.

library(RCurl) # Loading the RCurl package will enable me to read the csv file using the link from my Github
## Loading required package: bitops
Salaries <- read.csv(text = getURL("https://raw.githubusercontent.com/Emahayz/MSDS_R_Class/master/Salaries.csv"), header = T, sep = ",")
head(Salaries) # The original Salaries csv file is successfully read.
##   X      rank discipline yrs.since.phd yrs.service  sex salary
## 1 1      Prof          B            19          18 Male 139750
## 2 2      Prof          B            20          16 Male 173200
## 3 3  AsstProf          B             4           3 Male  79750
## 4 4      Prof          B            45          39 Male 115000
## 5 5      Prof          B            40          41 Male 141500
## 6 6 AssocProf          B             6           6 Male  97000