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

    Vehicle |
 Model Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        243        2.43        2.43
          1 |        849        8.49       10.92
          2 |      1,087       10.87       21.79
          3 |        648        6.48       28.27
          4 |        204        2.04       30.31
          5 |        180        1.80       32.11
          6 |        440        4.40       36.51
          7 |        126        1.26       37.77
          8 |        321        3.21       40.98
          9 |        384        3.84       44.82
         10 |        385        3.85       48.67
         11 |        135        1.35       50.02
         12 |         51        0.51       50.53
         13 |         19        0.19       50.72
         14 |          7        0.07       50.79
         15 |         17        0.17       50.96
         31 |         39        0.39       51.35
         32 |         20        0.20       51.55
         33 |          8        0.08       51.63
         34 |         40        0.40       52.03
         43 |          1        0.01       52.04
         61 |          4        0.04       52.08
         62 |         28        0.28       52.36
         63 |        129        1.29       53.65
         64 |        115        1.15       54.80
         65 |        221        2.21       57.01
         66 |        122        1.22       58.23
         69 |        335        3.35       61.58
         71 |         35        0.35       61.93
         72 |        187        1.87       63.80
         73 |      1,006       10.06       73.86
         74 |        255        2.55       76.41
         75 |         13        0.13       76.54
         76 |         16        0.16       76.70
         78 |          8        0.08       76.78
         79 |        540        5.40       82.18
         81 |        114        1.14       83.32
         82 |         21        0.21       83.53
         83 |         75        0.75       84.28
         85 |         39        0.39       84.67
         88 |         29        0.29       84.96
         89 |        486        4.86       89.82
         98 |         55        0.55       90.37
         99 |        963        9.63      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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