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

   Accident |
    Related |
   Factor 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,743       87.43       87.43
          1 |        246        2.46       89.89
          2 |        102        1.02       90.91
          3 |         76        0.76       91.67
          4 |          9        0.09       91.76
          5 |         57        0.57       92.33
          6 |         58        0.58       92.91
          7 |         92        0.92       93.83
          8 |         21        0.21       94.04
         20 |          8        0.08       94.12
         21 |          1        0.01       94.13
         22 |        105        1.05       95.18
         23 |         21        0.21       95.39
         24 |         23        0.23       95.62
         25 |         11        0.11       95.73
         26 |         74        0.74       96.47
         27 |         10        0.10       96.57
         28 |         18        0.18       96.75
         29 |          4        0.04       96.79
         40 |          4        0.04       96.83
         41 |          3        0.03       96.86
         42 |          3        0.03       96.89
         43 |         33        0.33       97.22
         45 |         28        0.28       97.50
         46 |         27        0.27       97.77
         47 |          3        0.03       97.80
         48 |          5        0.05       97.85
         60 |          6        0.06       97.91
         99 |        209        2.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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