Frequencies for man_coll variable in vehicle dataset :

  MANNER OF |
  COLLISION |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        339       54.15       54.15
          1 |         41        6.55       60.70
          2 |         78       12.46       73.16
          4 |         43        6.87       80.03
          5 |         52        8.31       88.34
          7 |         37        5.91       94.25
          8 |         36        5.75      100.00
------------+-----------------------------------
      Total |        626      100.00

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