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

  Manner of |
  Collision |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,621       46.21       46.21
          1 |        815        8.15       54.36
          2 |      1,676       16.76       71.12
          3 |          2        0.02       71.14
          4 |      2,514       25.14       96.28
          5 |        237        2.37       98.65
          6 |        124        1.24       99.89
          9 |         11        0.11      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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