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

  Manner of |
  Collision |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,343       43.43       43.43
          1 |        834        8.34       51.77
          2 |      1,484       14.84       66.61
          3 |          4        0.04       66.65
          4 |      2,986       29.86       96.51
          5 |        176        1.76       98.27
          6 |        153        1.53       99.80
          9 |         20        0.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016