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

   Accident |
    Related |
   Factor 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,530       95.30       95.30
          1 |          7        0.07       95.37
          2 |         63        0.63       96.00
          3 |         21        0.21       96.21
          4 |         91        0.91       97.12
          5 |         18        0.18       97.30
          6 |         21        0.21       97.51
          7 |         18        0.18       97.69
         16 |         40        0.40       98.09
         17 |          1        0.01       98.10
         99 |        190        1.90      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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