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

  MANNOR OF |
  COLLISION |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,753       47.53       47.53
          1 |        529        5.29       52.82
          2 |      1,817       18.17       70.99
          4 |      2,640       26.40       97.39
          5 |        123        1.23       98.62
          6 |        138        1.38      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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