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

    Vehicle |
    Related |
   Factor 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,019       90.19       90.19
          1 |         20        0.20       90.39
          2 |         28        0.28       90.67
          3 |          4        0.04       90.71
          4 |          4        0.04       90.75
          6 |          1        0.01       90.76
          7 |          2        0.02       90.78
          8 |          2        0.02       90.80
          9 |          3        0.03       90.83
         11 |          1        0.01       90.84
         13 |          1        0.01       90.85
         14 |          2        0.02       90.87
         15 |          2        0.02       90.89
         18 |          5        0.05       90.94
         31 |          9        0.09       91.03
         99 |        897        8.97      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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