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

  MANNOR OF |
  COLLISION |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,549       45.49       45.49
          1 |        763        7.63       53.12
          2 |      1,846       18.46       71.58
          4 |      2,545       25.45       97.03
          5 |         97        0.97       98.00
          6 |        137        1.37       99.37
          9 |         63        0.63      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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