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

   ejection |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,204       72.04       72.04
          1 |        709        7.09       79.13
          2 |        148        1.48       80.61
          3 |         34        0.34       80.95
          7 |         89        0.89       81.84
          8 |      1,771       17.71       99.55
          9 |         45        0.45      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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