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

    related |
factors (2) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,916       99.16       99.16
          2 |          1        0.01       99.17
          6 |          1        0.01       99.18
          7 |          1        0.01       99.19
         14 |         12        0.12       99.31
         15 |         14        0.14       99.45
         17 |          1        0.01       99.46
         18 |          1        0.01       99.47
         19 |         13        0.13       99.60
         20 |          5        0.05       99.65
         23 |         17        0.17       99.82
         26 |          2        0.02       99.84
         27 |          4        0.04       99.88
         28 |          7        0.07       99.95
         99 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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