Frequencies for man_coll variable in vehicle dataset :

  MANNER OF |
  COLLISION |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |        380       53.07       53.07
          1 |         43        6.01       59.08
          2 |        110       15.36       74.44
          4 |        151       21.09       95.53
          5 |         15        2.09       97.63
          6 |         17        2.37      100.00
------------+-----------------------------------
      Total |        716      100.00

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