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

    Vehicle |
 Model Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        139        1.39        1.39
          1 |        342        3.42        4.81
          2 |        313        3.13        7.94
          3 |        312        3.12       11.06
          4 |        174        1.74       12.80
          5 |         89        0.89       13.69
          6 |        147        1.47       15.16
          7 |         88        0.88       16.04
          8 |        142        1.42       17.46
          9 |        255        2.55       20.01
         10 |        188        1.88       21.89
         11 |         83        0.83       22.72
         12 |         76        0.76       23.48
         13 |        159        1.59       25.07
         14 |         31        0.31       25.38
         15 |        139        1.39       26.77
         16 |        123        1.23       28.00
         17 |        153        1.53       29.53
         18 |         41        0.41       29.94
         19 |         28        0.28       30.22
         31 |        213        2.13       32.35
         32 |        393        3.93       36.28
         33 |        246        2.46       38.74
         34 |        233        2.33       41.07
         35 |        117        1.17       42.24
         36 |        111        1.11       43.35
         37 |         45        0.45       43.80
         38 |         70        0.70       44.50
         39 |         50        0.50       45.00
         40 |         56        0.56       45.56
         41 |          8        0.08       45.64
         42 |         21        0.21       45.85
         43 |        120        1.20       47.05
         44 |         23        0.23       47.28
         45 |          1        0.01       47.29
         47 |          3        0.03       47.32
         50 |          9        0.09       47.41
         51 |         80        0.80       48.21
         52 |          3        0.03       48.24
         62 |          4        0.04       48.28
         63 |         22        0.22       48.50
         64 |         30        0.30       48.80
         65 |        139        1.39       50.19
         66 |        168        1.68       51.87
         69 |        371        3.71       55.58
         70 |        186        1.86       57.44
         71 |        120        1.20       58.64
         72 |         84        0.84       59.48
         73 |        929        9.29       68.77
         74 |        361        3.61       72.38
         75 |          9        0.09       72.47
         76 |         35        0.35       72.82
         77 |        793        7.93       80.75
         78 |         39        0.39       81.14
         79 |        262        2.62       83.76
         81 |         17        0.17       83.93
         82 |          3        0.03       83.96
         83 |          5        0.05       84.01
         84 |        677        6.77       90.78
         85 |         18        0.18       90.96
         88 |         65        0.65       91.61
         89 |         20        0.20       91.81
         90 |          8        0.08       91.89
         97 |         43        0.43       92.32
         98 |          3        0.03       92.35
         99 |        765        7.65      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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