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

   Accident |
    Related |
   Factor 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,568       95.68       95.68
          1 |          3        0.03       95.71
          2 |          1        0.01       95.72
          3 |          9        0.09       95.81
          4 |          2        0.02       95.83
          5 |          8        0.08       95.91
          6 |          1        0.01       95.92
          7 |          2        0.02       95.94
          8 |          2        0.02       95.96
         20 |          1        0.01       95.97
         22 |         13        0.13       96.10
         24 |          2        0.02       96.12
         26 |          8        0.08       96.20
         28 |          5        0.05       96.25
         29 |          1        0.01       96.26
         43 |          2        0.02       96.28
         45 |          4        0.04       96.32
         46 |          1        0.01       96.33
         48 |          1        0.01       96.34
         49 |          1        0.01       96.35
         50 |          1        0.01       96.36
         99 |        364        3.64      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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