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

   Accident |
    Related |
   Factor 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,510       95.10       95.10
          1 |          9        0.09       95.19
          2 |          4        0.04       95.23
          3 |          5        0.05       95.28
          5 |          9        0.09       95.37
          6 |          1        0.01       95.38
          7 |          5        0.05       95.43
          8 |          2        0.02       95.45
         20 |          1        0.01       95.46
         22 |         25        0.25       95.71
         23 |          2        0.02       95.73
         24 |          3        0.03       95.76
         26 |          8        0.08       95.84
         28 |          3        0.03       95.87
         40 |          1        0.01       95.88
         41 |          2        0.02       95.90
         43 |          4        0.04       95.94
         44 |          3        0.03       95.97
         45 |          6        0.06       96.03
         46 |          6        0.06       96.09
         48 |          2        0.02       96.11
         60 |          2        0.02       96.13
         99 |        387        3.87      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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