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

  Manner of |
  Collision |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,645       46.45       46.45
          1 |        752        7.52       53.97
          2 |      1,666       16.66       70.63
          4 |      2,623       26.23       96.86
          5 |        183        1.83       98.69
          6 |        118        1.18       99.87
          9 |         13        0.13      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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