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

    Related |
Factors (1) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,484       94.84       94.84
          2 |         10        0.10       94.94
          3 |         16        0.16       95.10
          4 |         24        0.24       95.34
          5 |          7        0.07       95.41
          6 |          3        0.03       95.44
         13 |          1        0.01       95.45
         14 |        160        1.60       97.05
         15 |         12        0.12       97.17
         16 |         13        0.13       97.30
         17 |          1        0.01       97.31
         18 |         23        0.23       97.54
         19 |         90        0.90       98.44
         20 |        111        1.11       99.55
         21 |          4        0.04       99.59
         22 |          2        0.02       99.61
         23 |         24        0.24       99.85
         99 |         15        0.15      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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