Frequencies for first 10,000 rows of prev_spd variable in vehicle dataset :

   Previous |
   Speeding |
Convictions |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,293       62.93       62.93
          1 |      1,683       16.83       79.76
          2 |        689        6.89       86.65
          3 |        277        2.77       89.42
          4 |        133        1.33       90.75
          5 |         65        0.65       91.40
          6 |         37        0.37       91.77
          7 |         25        0.25       92.02
          8 |          8        0.08       92.10
          9 |          2        0.02       92.12
         11 |          3        0.03       92.15
         12 |          2        0.02       92.17
         13 |          2        0.02       92.19
         15 |          1        0.01       92.20
         99 |        780        7.80      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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