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

  MANNOR OF |
  COLLISION |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      6,057       60.57       60.57
          1 |        505        5.05       65.62
          2 |      1,113       11.13       76.75
          3 |          1        0.01       76.76
          4 |      2,083       20.83       97.59
          5 |        130        1.30       98.89
          6 |         74        0.74       99.63
          9 |         37        0.37      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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