Frequencies for first 10,000 rows of model variable in vehicle dataset :

    Vehicle |
 Model Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        134        1.34        1.34
          1 |        427        4.27        5.61
          2 |        338        3.38        8.99
          3 |        285        2.85       11.84
          4 |        160        1.60       13.44
          5 |         93        0.93       14.37
          6 |        164        1.64       16.01
          7 |        100        1.00       17.01
          8 |        175        1.75       18.76
          9 |        354        3.54       22.30
         10 |        215        2.15       24.45
         11 |        105        1.05       25.50
         12 |         86        0.86       26.36
         13 |        141        1.41       27.77
         14 |         47        0.47       28.24
         15 |        132        1.32       29.56
         16 |         87        0.87       30.43
         17 |         92        0.92       31.35
         18 |         21        0.21       31.56
         19 |          5        0.05       31.61
         31 |        214        2.14       33.75
         32 |        384        3.84       37.59
         33 |        241        2.41       40.00
         34 |        222        2.22       42.22
         35 |        104        1.04       43.26
         36 |         87        0.87       44.13
         37 |         44        0.44       44.57
         38 |         64        0.64       45.21
         39 |         39        0.39       45.60
         40 |         32        0.32       45.92
         41 |          7        0.07       45.99
         42 |         19        0.19       46.18
         43 |         86        0.86       47.04
         44 |         13        0.13       47.17
         50 |          4        0.04       47.21
         51 |         31        0.31       47.52
         52 |          1        0.01       47.53
         61 |          7        0.07       47.60
         62 |         12        0.12       47.72
         63 |         47        0.47       48.19
         64 |         59        0.59       48.78
         65 |        193        1.93       50.71
         66 |        170        1.70       52.41
         69 |        380        3.80       56.21
         70 |        136        1.36       57.57
         71 |        101        1.01       58.58
         72 |         47        0.47       59.05
         73 |        940        9.40       68.45
         74 |        305        3.05       71.50
         75 |          5        0.05       71.55
         76 |         31        0.31       71.86
         77 |        688        6.88       78.74
         78 |         70        0.70       79.44
         79 |        236        2.36       81.80
         81 |         37        0.37       82.17
         82 |          3        0.03       82.20
         83 |         19        0.19       82.39
         84 |        647        6.47       88.86
         85 |         16        0.16       89.02
         88 |         86        0.86       89.88
         89 |         38        0.38       90.26
         90 |          4        0.04       90.30
         97 |         35        0.35       90.65
         98 |          4        0.04       90.69
         99 |        931        9.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016