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

    RELATED |
   FACTOR 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,674       96.74       96.74
          1 |          1        0.01       96.75
          2 |         18        0.18       96.93
          3 |          4        0.04       96.97
          4 |          4        0.04       97.01
          5 |          2        0.02       97.03
          6 |          1        0.01       97.04
          7 |          1        0.01       97.05
          8 |          2        0.02       97.07
          9 |          4        0.04       97.11
         10 |          1        0.01       97.12
         12 |          3        0.03       97.15
         13 |          2        0.02       97.17
         15 |          2        0.02       97.19
         18 |          2        0.02       97.21
         31 |          4        0.04       97.25
         33 |          2        0.02       97.27
         99 |        273        2.73      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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