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

    Vehicle |
    Related |
   Factor 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,720       97.20       97.20
          1 |          4        0.04       97.24
          2 |         11        0.11       97.35
          3 |          4        0.04       97.39
          4 |          2        0.02       97.41
          5 |          4        0.04       97.45
          6 |          1        0.01       97.46
          7 |          2        0.02       97.48
          9 |          2        0.02       97.50
         14 |          1        0.01       97.51
         99 |        249        2.49      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016