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

  MANNOR OF |
  COLLISION |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      4,882       48.82       48.82
          1 |        694        6.94       55.76
          2 |      1,806       18.06       73.82
          4 |      2,392       23.92       97.74
          5 |        143        1.43       99.17
          6 |         69        0.69       99.86
          9 |         14        0.14      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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