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

   Accident |
    Related |
   Factor 2 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,541       95.41       95.41
          1 |          5        0.05       95.46
          2 |          2        0.02       95.48
          3 |          5        0.05       95.53
          4 |          2        0.02       95.55
          5 |          9        0.09       95.64
          6 |          7        0.07       95.71
          7 |          9        0.09       95.80
          8 |          3        0.03       95.83
         22 |         16        0.16       95.99
         23 |          1        0.01       96.00
         24 |          3        0.03       96.03
         26 |          6        0.06       96.09
         27 |          1        0.01       96.10
         28 |          1        0.01       96.11
         29 |          1        0.01       96.12
         41 |          1        0.01       96.13
         42 |          1        0.01       96.14
         43 |          6        0.06       96.20
         44 |          3        0.03       96.23
         45 |         12        0.12       96.35
         46 |          3        0.03       96.38
         48 |          2        0.02       96.40
         60 |          3        0.03       96.43
         99 |        357        3.57      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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