Frequencies for first 10,000 rows of cf3 variable in accident dataset :

   Accident |
    Related |
   Factor 3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,604       96.04       96.04
          1 |          1        0.01       96.05
         22 |          1        0.01       96.06
         23 |          1        0.01       96.07
         26 |          4        0.04       96.11
         41 |          1        0.01       96.12
         45 |          1        0.01       96.13
         99 |        387        3.87      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016