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

   Accident |
    Related |
   Factor 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,593       95.93       95.93
          1 |          2        0.02       95.95
          2 |         60        0.60       96.55
          3 |         17        0.17       96.72
          4 |        104        1.04       97.76
          5 |         28        0.28       98.04
          6 |          3        0.03       98.07
          7 |         11        0.11       98.18
         15 |          2        0.02       98.20
         16 |         22        0.22       98.42
         17 |          3        0.03       98.45
         99 |        155        1.55      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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