Frequencies for first 10,000 rows of cf2 variable in accident dataset :

    RELATED |
   FACTOR 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,877       98.77       98.77
          2 |          1        0.01       98.78
          3 |          1        0.01       98.79
          4 |          1        0.01       98.80
         14 |          4        0.04       98.84
         15 |          3        0.03       98.87
         16 |          1        0.01       98.88
         19 |          4        0.04       98.92
         99 |        108        1.08      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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