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

   Previous |
   Speeding |
Convictions |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,025       70.25       70.25
          1 |      1,536       15.36       85.61
          2 |        535        5.35       90.96
          3 |        188        1.88       92.84
          4 |         72        0.72       93.56
          5 |         26        0.26       93.82
          6 |         13        0.13       93.95
          7 |          1        0.01       93.96
          8 |          2        0.02       93.98
         99 |        602        6.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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