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

   Accident |
    Related |
   Factor 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,625       96.25       96.25
          1 |          1        0.01       96.26
          2 |         22        0.22       96.48
          3 |         11        0.11       96.59
          4 |        129        1.29       97.88
          5 |         15        0.15       98.03
          6 |          2        0.02       98.05
          7 |          3        0.03       98.08
         16 |         37        0.37       98.45
         17 |          2        0.02       98.47
         99 |        153        1.53      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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