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

 Violations |
    Charged |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,782       77.82       77.82
          1 |      1,360       13.60       91.42
          2 |        533        5.33       96.75
          9 |        325        3.25      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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