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

   Ejection |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,250       72.50       72.50
          1 |      1,286       12.86       85.36
          2 |        161        1.61       86.97
          9 |      1,303       13.03      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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