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

    Related |
Factors (1) |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,437       94.37       94.37
          1 |          1        0.01       94.38
          2 |         15        0.15       94.53
          3 |         15        0.15       94.68
          4 |         55        0.55       95.23
          5 |          3        0.03       95.26
          6 |          4        0.04       95.30
         13 |          1        0.01       95.31
         14 |        133        1.33       96.64
         15 |          8        0.08       96.72
         16 |         10        0.10       96.82
         17 |          3        0.03       96.85
         18 |         17        0.17       97.02
         19 |        105        1.05       98.07
         20 |        106        1.06       99.13
         21 |          5        0.05       99.18
         22 |          1        0.01       99.19
         23 |         74        0.74       99.93
         99 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016