Frequencies for first 10,000 rows of cf1 variable in accident dataset :

   Accident |
    Related |
   Factor 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,636       86.36       86.36
          1 |        119        1.19       87.55
          2 |         82        0.82       88.37
          3 |         77        0.77       89.14
          4 |          5        0.05       89.19
          5 |         45        0.45       89.64
          6 |         53        0.53       90.17
          7 |         69        0.69       90.86
          8 |         21        0.21       91.07
         20 |          6        0.06       91.13
         21 |          1        0.01       91.14
         22 |        120        1.20       92.34
         23 |          4        0.04       92.38
         24 |         18        0.18       92.56
         25 |         23        0.23       92.79
         26 |        105        1.05       93.84
         27 |          7        0.07       93.91
         28 |          9        0.09       94.00
         40 |          5        0.05       94.05
         41 |          8        0.08       94.13
         42 |          3        0.03       94.16
         43 |         27        0.27       94.43
         44 |         16        0.16       94.59
         45 |         11        0.11       94.70
         47 |         10        0.10       94.80
         48 |          3        0.03       94.83
         49 |          6        0.06       94.89
         50 |          4        0.04       94.93
         51 |          2        0.02       94.95
         99 |        505        5.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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