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

   Accident |
    Related |
   Factor 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,625       96.25       96.25
          1 |          7        0.07       96.32
          2 |          7        0.07       96.39
          3 |          4        0.04       96.43
          4 |          2        0.02       96.45
          5 |          9        0.09       96.54
          6 |          5        0.05       96.59
          7 |          7        0.07       96.66
          8 |          4        0.04       96.70
         22 |          9        0.09       96.79
         24 |          1        0.01       96.80
         26 |          7        0.07       96.87
         27 |          1        0.01       96.88
         28 |          3        0.03       96.91
         29 |          1        0.01       96.92
         47 |          1        0.01       96.93
         49 |          1        0.01       96.94
         50 |          2        0.02       96.96
         51 |          1        0.01       96.97
         99 |        303        3.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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