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

   previous |
   speeding |
convictions |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,751       77.51       77.51
          1 |      1,188       11.88       89.39
          2 |        360        3.60       92.99
          3 |        108        1.08       94.07
          4 |         34        0.34       94.41
          5 |         13        0.13       94.54
          6 |          4        0.04       94.58
          7 |          2        0.02       94.60
          8 |          3        0.03       94.63
          9 |          1        0.01       94.64
         10 |          1        0.01       94.65
         99 |        484        4.84       99.49
        998 |         51        0.51      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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