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

   Ejection |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      3,237       32.37       32.37
          1 |      1,382       13.82       46.19
          2 |        129        1.29       47.48
          9 |      5,252       52.52      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Apr 2016