Tra le persone con più di 50 anni di che etnia è quello che guadagna di più? e quello che guadagna di meno?

library("tidyverse")
## ── Attaching core tidyverse packages ──────────────────────── tidyverse 2.0.0 ──
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## ✔ forcats   1.0.0     ✔ stringr   1.5.0
## ✔ ggplot2   3.4.1     ✔ tibble    3.2.0
## ✔ lubridate 1.9.2     ✔ tidyr     1.3.0
## ✔ purrr     1.0.1     
## ── Conflicts ────────────────────────────────────────── tidyverse_conflicts() ──
## ✖ dplyr::filter() masks stats::filter()
## ✖ dplyr::lag()    masks stats::lag()
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library("ISLR")

data("Credit",package="ISLR")

Credit %>%
select(Ethnicity,Income,Age) %>%
filter(Age>50) %>%
arrange(desc(Income)) %>%
head(1)
##   Ethnicity  Income Age
## 1 Caucasian 182.728  98
Credit %>%
select(Ethnicity,Income,Age) %>%
filter(Age>50) %>%
arrange(Income) %>%
head(1)
##   Ethnicity Income Age
## 1 Caucasian 10.354  70

Selezionare tutte le variabili eccetto ID e Age

Credit %>%
select(-ID,-Age)
##      Income Limit Rating Cards Education Gender Student Married
## 1    14.891  3606    283     2        11   Male      No     Yes
## 2   106.025  6645    483     3        15 Female     Yes     Yes
## 3   104.593  7075    514     4        11   Male      No      No
## 4   148.924  9504    681     3        11 Female      No      No
## 5    55.882  4897    357     2        16   Male      No     Yes
## 6    80.180  8047    569     4        10   Male      No      No
## 7    20.996  3388    259     2        12 Female      No      No
## 8    71.408  7114    512     2         9   Male      No      No
## 9    15.125  3300    266     5        13 Female      No      No
## 10   71.061  6819    491     3        19 Female     Yes     Yes
## 11   63.095  8117    589     4        14   Male      No     Yes
## 12   15.045  1311    138     3        16   Male      No      No
## 13   80.616  5308    394     1         7 Female      No     Yes
## 14   43.682  6922    511     1         9   Male      No     Yes
## 15   19.144  3291    269     2        13 Female      No      No
## 16   20.089  2525    200     3        15 Female      No     Yes
## 17   53.598  3714    286     3        17 Female      No     Yes
## 18   36.496  4378    339     3        15 Female      No     Yes
## 19   49.570  6384    448     1         9 Female      No     Yes
## 20   42.079  6626    479     2         9   Male      No      No
## 21   17.700  2860    235     4        16 Female      No      No
## 22   37.348  6378    458     1        17 Female      No      No
## 23   20.103  2631    213     3        10   Male      No     Yes
## 24   64.027  5179    398     5         8   Male      No     Yes
## 25   10.742  1757    156     3        15 Female      No      No
## 26   14.090  4323    326     5        16 Female      No     Yes
## 27   42.471  3625    289     6        12 Female     Yes      No
## 28   32.793  4534    333     2        16   Male      No      No
## 29  186.634 13414    949     2        14 Female      No     Yes
## 30   26.813  5611    411     4        16 Female      No      No
## 31   34.142  5666    413     4         5 Female      No     Yes
## 32   28.941  2733    210     5        16   Male      No     Yes
## 33  134.181  7838    563     2        13 Female      No      No
## 34   31.367  1829    162     4        10   Male      No     Yes
## 35   20.150  2646    199     2        14 Female      No     Yes
## 36   23.350  2558    220     3        12 Female     Yes      No
## 37   62.413  6457    455     2        11 Female      No     Yes
## 38   30.007  6481    462     2         9 Female      No     Yes
## 39   11.795  3899    300     4        10 Female      No      No
## 40   13.647  3461    264     4        14   Male      No     Yes
## 41   34.950  3327    253     3        14 Female      No      No
## 42  113.659  7659    538     2        15   Male     Yes     Yes
## 43   44.158  4763    351     2        13 Female      No     Yes
## 44   36.929  6257    445     1        14 Female      No     Yes
## 45   31.861  6375    469     3        16 Female      No     Yes
## 46   77.380  7569    564     3        12 Female      No     Yes
## 47   19.531  5043    376     2        16 Female     Yes     Yes
## 48   44.646  4431    320     2        15   Male     Yes     Yes
## 49   44.522  2252    205     6        15   Male      No     Yes
## 50   43.479  4569    354     4        13   Male     Yes     Yes
## 51   36.362  5183    376     3        15   Male      No     Yes
## 52   39.705  3969    301     2        20   Male      No     Yes
## 53   44.205  5441    394     1        12   Male      No     Yes
## 54   16.304  5466    413     4        10   Male      No     Yes
## 55   15.333  1499    138     2         9 Female      No     Yes
## 56   32.916  1786    154     2         8 Female      No     Yes
## 57   57.100  4742    372     7        18 Female      No     Yes
## 58   76.273  4779    367     4        14 Female      No     Yes
## 59   10.354  3480    281     2        17   Male      No     Yes
## 60   51.872  5294    390     4        17 Female      No      No
## 61   35.510  5198    364     2        20 Female      No      No
## 62   21.238  3089    254     3        10 Female      No      No
## 63   30.682  1671    160     2         7 Female      No      No
## 64   14.132  2998    251     4        17   Male      No      No
## 65   32.164  2937    223     2        15 Female      No     Yes
## 66   12.000  4160    320     4        14 Female      No     Yes
## 67  113.829  9704    694     4        13 Female      No     Yes
## 68   11.187  5099    380     4        16 Female      No      No
## 69   27.847  5619    418     2        15 Female      No     Yes
## 70   49.502  6819    505     4        14   Male      No     Yes
## 71   24.889  3954    318     4        12   Male      No     Yes
## 72   58.781  7402    538     2        12 Female      No     Yes
## 73   22.939  4923    355     1        18 Female      No     Yes
## 74   23.989  4523    338     4        15   Male      No      No
## 75   16.103  5390    418     4        10 Female      No     Yes
## 76   33.017  3180    224     2        16   Male      No     Yes
## 77   30.622  3293    251     1        16   Male     Yes      No
## 78   20.936  3254    253     1        15 Female      No      No
## 79  110.968  6662    468     3        11 Female      No     Yes
## 80   15.354  2101    171     2        14   Male      No      No
## 81   27.369  3449    288     3         9 Female      No     Yes
## 82   53.480  4263    317     1        15   Male      No      No
## 83   23.672  4433    344     3        11   Male      No      No
## 84   19.225  1433    122     3        14 Female      No      No
## 85   43.540  2906    232     4        11   Male      No      No
## 86  152.298 12066    828     4        12 Female      No     Yes
## 87   55.367  6340    448     1        15   Male      No     Yes
## 88   11.741  2271    182     4        12 Female      No      No
## 89   15.560  4307    352     4         8   Male      No     Yes
## 90   59.530  7518    543     3         9 Female      No      No
## 91   20.191  5767    431     4        16   Male      No     Yes
## 92   48.498  6040    456     3        16   Male      No     Yes
## 93   30.733  2832    249     4        13   Male      No      No
## 94   16.479  5435    388     2        16   Male      No      No
## 95   38.009  3075    245     3        15 Female      No      No
## 96   14.084   855    120     5        17 Female      No     Yes
## 97   14.312  5382    367     1        17   Male     Yes      No
## 98   26.067  3388    266     4        17 Female      No     Yes
## 99   36.295  2963    241     2        14 Female     Yes      No
## 100  83.851  8494    607     5        18   Male      No      No
## 101  21.153  3736    256     1        11   Male      No      No
## 102  17.976  2433    190     3        16 Female     Yes      No
## 103  68.713  7582    531     2        16   Male     Yes      No
## 104 146.183  9540    682     6        15   Male      No      No
## 105  15.846  4768    365     4        12 Female      No      No
## 106  12.031  3182    259     2        18 Female      No     Yes
## 107  16.819  1337    115     2        15   Male      No     Yes
## 108  39.110  3189    263     3        12   Male      No      No
## 109 107.986  6033    449     4        14   Male      No     Yes
## 110  13.561  3261    279     5        19   Male      No     Yes
## 111  34.537  3271    250     3        17 Female      No     Yes
## 112  28.575  2959    231     2        11 Female      No      No
## 113  46.007  6637    491     4        14   Male      No     Yes
## 114  69.251  6386    474     4        12 Female      No     Yes
## 115  16.482  3326    268     4        15   Male      No      No
## 116  40.442  4828    369     5         8 Female      No      No
## 117  35.177  2117    186     3        16 Female      No      No
## 118  91.362  9113    626     1        17   Male      No     Yes
## 119  27.039  2161    173     3        17 Female      No      No
## 120  23.012  1410    137     3        16   Male      No      No
## 121  27.241  1402    128     2        15 Female      No     Yes
## 122 148.080  8157    599     2        13   Male      No     Yes
## 123  62.602  7056    481     1        11 Female      No      No
## 124  11.808  1300    117     3        14 Female      No      No
## 125  29.564  2529    192     1        12 Female      No     Yes
## 126  27.578  2531    195     1        15 Female      No     Yes
## 127  26.427  5533    433     5        15 Female     Yes     Yes
## 128  57.202  3411    259     3        11 Female      No      No
## 129 123.299  8376    610     2        17   Male     Yes      No
## 130  18.145  3461    279     3        15   Male      No     Yes
## 131  23.793  3821    281     4        12 Female     Yes     Yes
## 132  10.726  1568    162     5        19   Male      No     Yes
## 133  23.283  5443    407     4        13   Male      No     Yes
## 134  21.455  5829    427     4        12 Female      No     Yes
## 135  34.664  5835    452     3        15 Female      No     Yes
## 136  44.473  3500    257     3        16 Female      No      No
## 137  54.663  4116    314     2         8 Female      No      No
## 138  36.355  3613    278     4         9   Male      No     Yes
## 139  21.374  2073    175     2        11 Female      No     Yes
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## 141  39.831  6045    459     3        12 Female     Yes     Yes
## 142  91.876  6754    483     2        10   Male      No     Yes
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## 153  41.419  2120    184     4        11 Female     Yes      No
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## 168  29.403  2327    178     1        14 Female      No     Yes
## 169  27.470  2820    219     1        11 Female      No     Yes
## 170  27.330  6179    459     4        12 Female      No     Yes
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## 341  27.794  3807    301     4         8 Female      No     Yes
## 342  13.234  3922    299     2        17 Female      No     Yes
## 343  14.595  2955    260     5         9   Male      No     Yes
## 344  10.735  3746    280     2        17 Female      No     Yes
## 345  48.218  5199    401     7        10   Male      No     Yes
## 346  30.012  1511    137     2        17   Male      No     Yes
## 347  21.551  5380    420     5        18   Male      No     Yes
## 348 160.231 10748    754     2        17   Male      No      No
## 349  13.433  1134    112     3        14   Male      No     Yes
## 350  48.577  5145    389     3        13 Female      No     Yes
## 351  30.002  1561    155     4        13 Female      No     Yes
## 352  61.620  5140    374     1         9   Male      No     Yes
## 353 104.483  7140    507     2        14   Male      No     Yes
## 354  41.868  4716    342     2        18   Male      No      No
## 355  12.068  3873    292     1        18 Female      No     Yes
## 356 180.682 11966    832     2         8 Female      No     Yes
## 357  34.480  6090    442     3        14   Male      No      No
## 358  39.609  2539    188     1        14   Male      No     Yes
## 359  30.111  4336    339     1        18   Male      No     Yes
## 360  12.335  4471    344     3        12   Male      No     Yes
## 361  53.566  5891    434     4        10 Female      No      No
## 362  53.217  4943    362     2        16 Female      No     Yes
## 363  26.162  5101    382     3        19 Female      No      No
## 364  64.173  6127    433     1        10   Male      No     Yes
## 365 128.669  9824    685     3        16   Male      No     Yes
## 366 113.772  6442    489     4        15   Male     Yes     Yes
## 367  61.069  7871    564     3        14   Male      No     Yes
## 368  23.793  3615    263     2        14   Male      No      No
## 369  89.000  5759    440     3         6 Female      No      No
## 370  71.682  8028    599     3        16   Male      No     Yes
## 371  35.610  6135    466     4        12   Male      No      No
## 372  39.116  2150    173     4        15   Male      No      No
## 373  19.782  3782    293     2        16 Female     Yes      No
## 374  55.412  5354    383     2        16 Female     Yes     Yes
## 375  29.400  4840    368     3        18 Female      No     Yes
## 376  20.974  5673    413     5        16 Female      No     Yes
## 377  87.625  7167    515     2        10 Female      No      No
## 378  28.144  1567    142     3        10   Male      No     Yes
## 379  19.349  4941    366     1        19   Male      No     Yes
## 380  53.308  2860    214     1        10   Male      No     Yes
## 381 115.123  7760    538     3        14 Female      No      No
## 382 101.788  8029    574     2        11   Male      No     Yes
## 383  24.824  5495    409     1         9   Male     Yes      No
## 384  14.292  3274    282     9         9   Male      No     Yes
## 385  20.088  1870    180     3        16   Male      No      No
## 386  26.400  5640    398     3        15 Female      No      No
## 387  19.253  3683    287     4        10   Male      No      No
## 388  16.529  1357    126     3         9   Male      No      No
## 389  37.878  6827    482     2        13 Female      No      No
## 390  83.948  7100    503     2        18   Male      No      No
## 391 135.118 10578    747     3        15 Female      No     Yes
## 392  73.327  6555    472     2        15 Female      No      No
## 393  25.974  2308    196     2        10   Male      No      No
## 394  17.316  1335    138     2        13   Male      No      No
## 395  49.794  5758    410     4         8   Male      No      No
## 396  12.096  4100    307     3        13   Male      No     Yes
## 397  13.364  3838    296     5        17   Male      No      No
## 398  57.872  4171    321     5        12 Female      No     Yes
## 399  37.728  2525    192     1        13   Male      No     Yes
## 400  18.701  5524    415     5         7 Female      No      No
##            Ethnicity Balance
## 1          Caucasian     333
## 2              Asian     903
## 3              Asian     580
## 4              Asian     964
## 5          Caucasian     331
## 6          Caucasian    1151
## 7   African American     203
## 8              Asian     872
## 9          Caucasian     279
## 10  African American    1350
## 11         Caucasian    1407
## 12         Caucasian       0
## 13             Asian     204
## 14         Caucasian    1081
## 15  African American     148
## 16  African American       0
## 17  African American       0
## 18             Asian     368
## 19             Asian     891
## 20             Asian    1048
## 21             Asian      89
## 22         Caucasian     968
## 23  African American       0
## 24  African American     411
## 25         Caucasian       0
## 26  African American     671
## 27         Caucasian     654
## 28  African American     467
## 29  African American    1809
## 30         Caucasian     915
## 31         Caucasian     863
## 32             Asian       0
## 33         Caucasian     526
## 34         Caucasian       0
## 35             Asian       0
## 36         Caucasian     419
## 37         Caucasian     762
## 38         Caucasian    1093
## 39         Caucasian     531
## 40         Caucasian     344
## 41  African American      50
## 42  African American    1155
## 43             Asian     385
## 44             Asian     976
## 45         Caucasian    1120
## 46         Caucasian     997
## 47             Asian    1241
## 48         Caucasian     797
## 49             Asian       0
## 50  African American     902
## 51  African American     654
## 52  African American     211
## 53         Caucasian     607
## 54             Asian     957
## 55             Asian       0
## 56             Asian       0
## 57             Asian     379
## 58         Caucasian     133
## 59         Caucasian     333
## 60         Caucasian     531
## 61             Asian     631
## 62         Caucasian     108
## 63         Caucasian       0
## 64         Caucasian     133
## 65  African American       0
## 66         Caucasian     602
## 67             Asian    1388
## 68  African American     889
## 69         Caucasian     822
## 70         Caucasian    1084
## 71         Caucasian     357
## 72             Asian    1103
## 73             Asian     663
## 74         Caucasian     601
## 75         Caucasian     945
## 76  African American      29
## 77         Caucasian     532
## 78             Asian     145
## 79         Caucasian     391
## 80             Asian       0
## 81         Caucasian     162
## 82         Caucasian      99
## 83         Caucasian     503
## 84         Caucasian       0
## 85         Caucasian       0
## 86             Asian    1779
## 87         Caucasian     815
## 88             Asian       0
## 89  African American     579
## 90  African American    1176
## 91  African American    1023
## 92         Caucasian     812
## 93         Caucasian       0
## 94  African American     937
## 95  African American       0
## 96  African American       0
## 97             Asian    1380
## 98  African American     155
## 99  African American     375
## 100        Caucasian    1311
## 101        Caucasian     298
## 102        Caucasian     431
## 103        Caucasian    1587
## 104        Caucasian    1050
## 105        Caucasian     745
## 106        Caucasian     210
## 107            Asian       0
## 108            Asian       0
## 109        Caucasian     227
## 110            Asian     297
## 111            Asian      47
## 112 African American       0
## 113        Caucasian    1046
## 114            Asian     768
## 115        Caucasian     271
## 116 African American     510
## 117        Caucasian       0
## 118            Asian    1341
## 119        Caucasian       0
## 120        Caucasian       0
## 121            Asian       0
## 122        Caucasian     454
## 123        Caucasian     904
## 124 African American       0
## 125        Caucasian       0
## 126        Caucasian       0
## 127            Asian    1404
## 128        Caucasian       0
## 129 African American    1259
## 130 African American     255
## 131 African American     868
## 132            Asian       0
## 133 African American     912
## 134 African American    1018
## 135 African American     835
## 136 African American       8
## 137 African American      75
## 138            Asian     187
## 139        Caucasian       0
## 140 African American    1597
## 141 African American    1425
## 142        Caucasian     605
## 143            Asian     669
## 144 African American     710
## 145        Caucasian      68
## 146            Asian     642
## 147        Caucasian     805
## 148        Caucasian       0
## 149        Caucasian       0
## 150            Asian       0
## 151 African American     581
## 152        Caucasian     534
## 153        Caucasian     156
## 154        Caucasian       0
## 155 African American       0
## 156            Asian       0
## 157        Caucasian     429
## 158        Caucasian    1020
## 159            Asian     653
## 160            Asian       0
## 161        Caucasian     836
## 162        Caucasian       0
## 163        Caucasian    1086
## 164 African American       0
## 165            Asian     548
## 166        Caucasian     570
## 167 African American       0
## 168        Caucasian       0
## 169            Asian       0
## 170        Caucasian    1099
## 171            Asian       0
## 172        Caucasian     283
## 173            Asian     108
## 174 African American     724
## 175 African American    1573
## 176        Caucasian       0
## 177        Caucasian       0
## 178            Asian     384
## 179        Caucasian     453
## 180        Caucasian    1237
## 181            Asian     423
## 182 African American     516
## 183 African American     789
## 184            Asian       0
## 185        Caucasian    1448
## 186 African American     450
## 187 African American     188
## 188            Asian       0
## 189 African American     930
## 190        Caucasian     126
## 191        Caucasian     538
## 192            Asian    1687
## 193            Asian     336
## 194        Caucasian    1426
## 195 African American       0
## 196 African American     802
## 197 African American     749
## 198 African American      69
## 199 African American       0
## 200            Asian     571
## 201 African American     829
## 202        Caucasian    1048
## 203        Caucasian       0
## 204 African American    1411
## 205        Caucasian     456
## 206        Caucasian     638
## 207        Caucasian       0
## 208        Caucasian    1216
## 209 African American     230
## 210 African American     732
## 211        Caucasian      95
## 212        Caucasian     799
## 213        Caucasian     308
## 214 African American     637
## 215        Caucasian     681
## 216        Caucasian     246
## 217            Asian      52
## 218        Caucasian     955
## 219            Asian     195
## 220        Caucasian     653
## 221            Asian    1246
## 222 African American    1230
## 223        Caucasian    1549
## 224            Asian     573
## 225        Caucasian     701
## 226            Asian    1075
## 227        Caucasian    1032
## 228        Caucasian     482
## 229 African American     156
## 230            Asian    1058
## 231 African American     661
## 232        Caucasian     657
## 233            Asian     689
## 234        Caucasian       0
## 235 African American    1329
## 236 African American     191
## 237            Asian     489
## 238            Asian     443
## 239        Caucasian      52
## 240            Asian     163
## 241            Asian     148
## 242 African American       0
## 243            Asian      16
## 244        Caucasian     856
## 245        Caucasian       0
## 246 African American       0
## 247            Asian     199
## 248        Caucasian       0
## 249        Caucasian       0
## 250        Caucasian      98
## 251            Asian       0
## 252        Caucasian     132
## 253        Caucasian    1355
## 254 African American     218
## 255        Caucasian    1048
## 256 African American     118
## 257            Asian       0
## 258            Asian       0
## 259        Caucasian       0
## 260        Caucasian    1092
## 261            Asian     345
## 262            Asian    1050
## 263        Caucasian     465
## 264 African American     133
## 265        Caucasian     651
## 266 African American     549
## 267        Caucasian      15
## 268            Asian     942
## 269        Caucasian       0
## 270        Caucasian     772
## 271        Caucasian     136
## 272        Caucasian     436
## 273            Asian     728
## 274            Asian    1255
## 275 African American     967
## 276        Caucasian     529
## 277        Caucasian     209
## 278        Caucasian     531
## 279        Caucasian     250
## 280        Caucasian     269
## 281 African American     541
## 282 African American       0
## 283        Caucasian    1298
## 284        Caucasian     890
## 285        Caucasian       0
## 286            Asian       0
## 287        Caucasian       0
## 288        Caucasian       0
## 289            Asian     863
## 290        Caucasian     485
## 291            Asian     159
## 292        Caucasian     309
## 293        Caucasian     481
## 294 African American    1677
## 295            Asian       0
## 296        Caucasian       0
## 297        Caucasian     293
## 298            Asian     188
## 299 African American       0
## 300 African American     711
## 301        Caucasian     580
## 302        Caucasian     172
## 303        Caucasian     295
## 304 African American     414
## 305            Asian     905
## 306            Asian       0
## 307        Caucasian      70
## 308            Asian       0
## 309            Asian     681
## 310        Caucasian     885
## 311 African American    1036
## 312        Caucasian     844
## 313        Caucasian     823
## 314            Asian     843
## 315 African American    1140
## 316        Caucasian     463
## 317            Asian    1142
## 318        Caucasian     136
## 319        Caucasian       0
## 320 African American       0
## 321 African American       5
## 322        Caucasian      81
## 323        Caucasian     265
## 324        Caucasian    1999
## 325            Asian     415
## 326        Caucasian     732
## 327        Caucasian    1361
## 328            Asian     984
## 329        Caucasian     121
## 330        Caucasian     846
## 331            Asian    1054
## 332        Caucasian     474
## 333        Caucasian     380
## 334 African American     182
## 335        Caucasian     594
## 336        Caucasian     194
## 337        Caucasian     926
## 338 African American       0
## 339        Caucasian     606
## 340 African American    1107
## 341 African American     320
## 342        Caucasian     426
## 343 African American     204
## 344        Caucasian     410
## 345            Asian     633
## 346        Caucasian       0
## 347            Asian     907
## 348        Caucasian    1192
## 349        Caucasian       0
## 350            Asian     503
## 351        Caucasian       0
## 352        Caucasian     302
## 353 African American     583
## 354        Caucasian     425
## 355            Asian     413
## 356 African American    1405
## 357        Caucasian     962
## 358            Asian       0
## 359        Caucasian     347
## 360 African American     611
## 361        Caucasian     712
## 362            Asian     382
## 363 African American     710
## 364        Caucasian     578
## 365            Asian    1243
## 366        Caucasian     790
## 367        Caucasian    1264
## 368 African American     216
## 369        Caucasian     345
## 370        Caucasian    1208
## 371        Caucasian     992
## 372        Caucasian       0
## 373        Caucasian     840
## 374        Caucasian    1003
## 375        Caucasian     588
## 376        Caucasian    1000
## 377 African American     767
## 378        Caucasian       0
## 379        Caucasian     717
## 380        Caucasian       0
## 381 African American     661
## 382        Caucasian     849
## 383        Caucasian    1352
## 384        Caucasian     382
## 385 African American       0
## 386            Asian     905
## 387 African American     371
## 388            Asian       0
## 389        Caucasian    1129
## 390        Caucasian     806
## 391            Asian    1393
## 392        Caucasian     721
## 393            Asian       0
## 394 African American       0
## 395        Caucasian     734
## 396        Caucasian     560
## 397 African American     480
## 398        Caucasian     138
## 399        Caucasian       0
## 400            Asian     966