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

   Previous |
   Speeding |
Convictions |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,446       64.46       64.46
          1 |      1,758       17.58       82.04
          2 |        661        6.61       88.65
          3 |        252        2.52       91.17
          4 |        126        1.26       92.43
          5 |         44        0.44       92.87
          6 |         24        0.24       93.11
          7 |         15        0.15       93.26
          8 |          7        0.07       93.33
          9 |          3        0.03       93.36
         10 |          1        0.01       93.37
         11 |          2        0.02       93.39
         13 |          1        0.01       93.40
         99 |        660        6.60      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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