Frequencies for first 10,000 rows of cf1 variable in accident dataset :

   Accident |
    Related |
   Factor 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,568       95.68       95.68
          1 |          2        0.02       95.70
          2 |          4        0.04       95.74
          3 |         10        0.10       95.84
          4 |        135        1.35       97.19
          5 |          7        0.07       97.26
          6 |          2        0.02       97.28
          7 |          5        0.05       97.33
         14 |          6        0.06       97.39
         15 |          1        0.01       97.40
         16 |         35        0.35       97.75
         17 |          4        0.04       97.79
         18 |         24        0.24       98.03
         19 |         52        0.52       98.55
         99 |        145        1.45      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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