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

    RELATED |
   FACTOR 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,741       97.41       97.41
          2 |          2        0.02       97.43
          3 |          2        0.02       97.45
          4 |          5        0.05       97.50
          5 |          1        0.01       97.51
          7 |          1        0.01       97.52
         12 |          1        0.01       97.53
         14 |          1        0.01       97.54
         15 |          2        0.02       97.56
         16 |          1        0.01       97.57
         18 |          5        0.05       97.62
         19 |          1        0.01       97.63
         31 |          1        0.01       97.64
         33 |          2        0.02       97.66
         34 |          8        0.08       97.74
         35 |          3        0.03       97.77
         38 |         11        0.11       97.88
         99 |        212        2.12      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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