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

  Manner of |
  Collision |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,861       48.61       48.61
          1 |        999        9.99       58.60
          2 |      1,133       11.33       69.93
          6 |      2,432       24.32       94.25
          7 |        296        2.96       97.21
          8 |        166        1.66       98.87
          9 |         20        0.20       99.07
         11 |         38        0.38       99.45
         98 |         11        0.11       99.56
         99 |         44        0.44      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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