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

   Previous |
   Speeding |
Convictions |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,202       62.02       62.02
          1 |      1,723       17.23       79.25
          2 |        666        6.66       85.91
          3 |        319        3.19       89.10
          4 |        162        1.62       90.72
          5 |         97        0.97       91.69
          6 |         39        0.39       92.08
          7 |         15        0.15       92.23
          8 |         22        0.22       92.45
          9 |          4        0.04       92.49
         10 |          5        0.05       92.54
         11 |          4        0.04       92.58
         13 |          1        0.01       92.59
         16 |          1        0.01       92.60
         18 |          1        0.01       92.61
         99 |        739        7.39      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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