Frequencies for first 10,000 rows of veh_cf1 variable in vehicle dataset :

    RELATED |
   FACTOR 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,820       88.20       88.20
          1 |        181        1.81       90.01
          2 |         60        0.60       90.61
          3 |          5        0.05       90.66
          4 |          5        0.05       90.71
          5 |         11        0.11       90.82
          7 |          6        0.06       90.88
          9 |          3        0.03       90.91
         12 |          2        0.02       90.93
         13 |          1        0.01       90.94
         14 |          6        0.06       91.00
         15 |          2        0.02       91.02
         16 |          5        0.05       91.07
         17 |          2        0.02       91.09
         18 |         17        0.17       91.26
         31 |        419        4.19       95.45
         32 |          9        0.09       95.54
         34 |         36        0.36       95.90
         35 |          4        0.04       95.94
         36 |          1        0.01       95.95
         38 |        217        2.17       98.12
         99 |        188        1.88      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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