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

    Vehicle |
 Model Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        189        1.89        1.89
          1 |        880        8.80       10.69
          2 |      1,122       11.22       21.91
          3 |        648        6.48       28.39
          4 |        169        1.69       30.08
          5 |        191        1.91       31.99
          6 |        434        4.34       36.33
          7 |        108        1.08       37.41
          8 |        327        3.27       40.68
          9 |        361        3.61       44.29
         10 |        345        3.45       47.74
         11 |         94        0.94       48.68
         12 |         17        0.17       48.85
         13 |          3        0.03       48.88
         14 |          3        0.03       48.91
         15 |          9        0.09       49.00
         31 |         45        0.45       49.45
         32 |          8        0.08       49.53
         33 |          4        0.04       49.57
         34 |         14        0.14       49.71
         62 |         13        0.13       49.84
         63 |         60        0.60       50.44
         64 |         57        0.57       51.01
         65 |         86        0.86       51.87
         66 |         11        0.11       51.98
         69 |        643        6.43       58.41
         71 |         24        0.24       58.65
         72 |        131        1.31       59.96
         73 |        680        6.80       66.76
         74 |        178        1.78       68.54
         75 |          6        0.06       68.60
         76 |          3        0.03       68.63
         78 |        263        2.63       71.26
         79 |        521        5.21       76.47
         81 |         57        0.57       77.04
         82 |         18        0.18       77.22
         83 |         10        0.10       77.32
         88 |        663        6.63       83.95
         89 |         71        0.71       84.66
         98 |        370        3.70       88.36
         99 |      1,164       11.64      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016