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

  MANNOR OF |
  COLLISION |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,715       47.15       47.15
          1 |        733        7.33       54.48
          2 |      1,801       18.01       72.49
          4 |      2,411       24.11       96.60
          5 |        151        1.51       98.11
          6 |         82        0.82       98.93
          9 |        107        1.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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