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

   Ejection |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,381       73.81       73.81
          1 |        824        8.24       82.05
          2 |        190        1.90       83.95
          3 |         35        0.35       84.30
          7 |          2        0.02       84.32
          8 |      1,519       15.19       99.51
          9 |         49        0.49      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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