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

  MANNOR OF |
  COLLISION |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,504       45.04       45.04
          1 |        816        8.16       53.20
          2 |      1,734       17.34       70.54
          4 |      2,551       25.51       96.05
          5 |        213        2.13       98.18
          6 |        120        1.20       99.38
          9 |         62        0.62      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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