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

   Accident |
    Related |
   Factor 1 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      8,604       86.04       86.04
          1 |        165        1.65       87.69
          2 |        102        1.02       88.71
          3 |         95        0.95       89.66
          4 |         13        0.13       89.79
          5 |         72        0.72       90.51
          6 |         74        0.74       91.25
          7 |         87        0.87       92.12
          8 |         15        0.15       92.27
         20 |         11        0.11       92.38
         21 |          1        0.01       92.39
         22 |        117        1.17       93.56
         23 |          8        0.08       93.64
         24 |         22        0.22       93.86
         25 |         13        0.13       93.99
         26 |         74        0.74       94.73
         27 |         14        0.14       94.87
         28 |         22        0.22       95.09
         40 |          2        0.02       95.11
         41 |          1        0.01       95.12
         42 |         20        0.20       95.32
         43 |         22        0.22       95.54
         44 |         18        0.18       95.72
         45 |         35        0.35       96.07
         46 |         24        0.24       96.31
         47 |          5        0.05       96.36
         48 |          2        0.02       96.38
         60 |          5        0.05       96.43
         99 |        357        3.57      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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