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

    RELATED |
   FACTOR 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,750       97.50       97.50
          1 |          4        0.04       97.54
          2 |          6        0.06       97.60
          3 |          2        0.02       97.62
          5 |          1        0.01       97.63
          6 |          2        0.02       97.65
         13 |          1        0.01       97.66
         18 |          1        0.01       97.67
         19 |          1        0.01       97.68
         31 |          2        0.02       97.70
         32 |          1        0.01       97.71
         36 |          1        0.01       97.72
         39 |          1        0.01       97.73
         42 |          1        0.01       97.74
         99 |        226        2.26      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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