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

    related |
factors (2) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,950       99.50       99.50
         14 |         12        0.12       99.62
         15 |          4        0.04       99.66
         18 |          2        0.02       99.68
         19 |          9        0.09       99.77
         20 |          2        0.02       99.79
         23 |         10        0.10       99.89
         26 |          1        0.01       99.90
         27 |          2        0.02       99.92
         28 |          3        0.03       99.95
         99 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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