Frequencies for first 10,000 rows of veh_cf2 variable in vehicle dataset :

    RELATED |
   FACTOR 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,754       97.54       97.54
          1 |          4        0.04       97.58
          2 |         10        0.10       97.68
          3 |          5        0.05       97.73
          4 |          1        0.01       97.74
          5 |          2        0.02       97.76
          8 |          1        0.01       97.77
          9 |          1        0.01       97.78
         13 |          1        0.01       97.79
         14 |          1        0.01       97.80
         15 |          1        0.01       97.81
         16 |          1        0.01       97.82
         17 |          1        0.01       97.83
         18 |          5        0.05       97.88
         31 |          4        0.04       97.92
         34 |          7        0.07       97.99
         35 |          2        0.02       98.01
         38 |         11        0.11       98.12
         99 |        188        1.88      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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