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

    RELATED |
   FACTOR 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,708       97.08       97.08
          1 |          6        0.06       97.14
          2 |         13        0.13       97.27
          3 |          8        0.08       97.35
          4 |          2        0.02       97.37
          5 |          2        0.02       97.39
          6 |          1        0.01       97.40
          7 |          1        0.01       97.41
          9 |          2        0.02       97.43
         12 |          1        0.01       97.44
         16 |          3        0.03       97.47
         18 |         12        0.12       97.59
         31 |          4        0.04       97.63
         34 |          4        0.04       97.67
         35 |          1        0.01       97.68
         99 |        232        2.32      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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