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

  Manner of |
  Collision |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,581       45.81       45.81
          1 |        853        8.53       54.34
          2 |      1,750       17.50       71.84
          3 |          9        0.09       71.93
          4 |      2,503       25.03       96.96
          7 |        297        2.97       99.93
          9 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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