Frequencies for first 10,000 rows of violchg3 variable in vehicle dataset :

  VIOLATION |
   CHARGE 3 |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,719       97.19       97.19
          1 |          1        0.01       97.20
          5 |          1        0.01       97.21
          7 |          3        0.03       97.24
          9 |          1        0.01       97.25
         11 |         19        0.19       97.44
         12 |          1        0.01       97.45
         15 |          1        0.01       97.46
         18 |          1        0.01       97.47
         31 |          1        0.01       97.48
         42 |          1        0.01       97.49
         46 |          3        0.03       97.52
         52 |          2        0.02       97.54
         71 |          3        0.03       97.57
         72 |          8        0.08       97.65
         74 |          2        0.02       97.67
         75 |          3        0.03       97.70
         76 |         12        0.12       97.82
         79 |          1        0.01       97.83
         82 |          1        0.01       97.84
         83 |          4        0.04       97.88
         92 |          3        0.03       97.91
         99 |        128        1.28       99.19
          . |         81        0.81      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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