Frequencies for viol_chg variable in vehicle dataset :

 VIOLATIONS |
    CHARGED |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        243       31.81       31.81
          1 |         11        1.44       33.25
          2 |        254       33.25       66.49
          3 |         19        2.49       68.98
          4 |        111       14.53       83.51
          6 |        117       15.31       98.82
          7 |          6        0.79       99.61
          9 |          1        0.13       99.74
          . |          2        0.26      100.00
------------+-----------------------------------
      Total |        764      100.00

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