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

  MANNOR OF |
  COLLISION |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,668       46.68       46.68
          1 |        684        6.84       53.52
          2 |      1,975       19.75       73.27
          4 |      2,313       23.13       96.40
          5 |        201        2.01       98.41
          6 |         75        0.75       99.16
          9 |         84        0.84      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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