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

   Accident |
    Related |
   Factor 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,647       96.47       96.47
          1 |          1        0.01       96.48
          2 |          9        0.09       96.57
          3 |          7        0.07       96.64
          4 |        132        1.32       97.96
          5 |         12        0.12       98.08
          6 |          3        0.03       98.11
          7 |          1        0.01       98.12
         14 |         10        0.10       98.22
         15 |          1        0.01       98.23
         16 |         35        0.35       98.58
         17 |          1        0.01       98.59
         18 |          7        0.07       98.66
         99 |        134        1.34      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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