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

  MANNOR OF |
  COLLISION |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,620       46.20       46.20
          1 |        739        7.39       53.59
          2 |      1,744       17.44       71.03
          3 |          3        0.03       71.06
          4 |      2,581       25.81       96.87
          5 |        172        1.72       98.59
          6 |        137        1.37       99.96
          9 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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