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

    Vehicle |
 Model Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        130        1.30        1.30
          1 |        353        3.53        4.83
          2 |        309        3.09        7.92
          3 |        311        3.11       11.03
          4 |        139        1.39       12.42
          5 |         87        0.87       13.29
          6 |        141        1.41       14.70
          7 |         65        0.65       15.35
          8 |        129        1.29       16.64
          9 |        273        2.73       19.37
         10 |        234        2.34       21.71
         11 |         81        0.81       22.52
         12 |         70        0.70       23.22
         13 |        176        1.76       24.98
         14 |         48        0.48       25.46
         15 |        148        1.48       26.94
         16 |        126        1.26       28.20
         17 |        158        1.58       29.78
         18 |         61        0.61       30.39
         19 |         37        0.37       30.76
         20 |          8        0.08       30.84
         31 |        196        1.96       32.80
         32 |        403        4.03       36.83
         33 |        223        2.23       39.06
         34 |        231        2.31       41.37
         35 |        141        1.41       42.78
         36 |        100        1.00       43.78
         37 |         50        0.50       44.28
         38 |         73        0.73       45.01
         39 |         63        0.63       45.64
         40 |         81        0.81       46.45
         41 |          7        0.07       46.52
         42 |         33        0.33       46.85
         43 |        128        1.28       48.13
         44 |         38        0.38       48.51
         45 |          2        0.02       48.53
         47 |          4        0.04       48.57
         50 |          8        0.08       48.65
         51 |         77        0.77       49.42
         52 |          6        0.06       49.48
         61 |          2        0.02       49.50
         62 |          5        0.05       49.55
         63 |         22        0.22       49.77
         64 |         17        0.17       49.94
         65 |        144        1.44       51.38
         66 |        156        1.56       52.94
         69 |        384        3.84       56.78
         70 |        200        2.00       58.78
         71 |        134        1.34       60.12
         72 |        105        1.05       61.17
         73 |        943        9.43       70.60
         74 |        328        3.28       73.88
         75 |         14        0.14       74.02
         76 |         42        0.42       74.44
         77 |        820        8.20       82.64
         78 |         28        0.28       82.92
         79 |        165        1.65       84.57
         80 |          1        0.01       84.58
         81 |        118        1.18       85.76
         82 |         10        0.10       85.86
         83 |         66        0.66       86.52
         84 |        459        4.59       91.11
         85 |         11        0.11       91.22
         87 |          1        0.01       91.23
         88 |         77        0.77       92.00
         89 |         20        0.20       92.20
         90 |          3        0.03       92.23
         97 |         47        0.47       92.70
         98 |          5        0.05       92.75
         99 |        725        7.25      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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