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

   ejection |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,253       72.53       72.53
          1 |        730        7.30       79.83
          2 |        152        1.52       81.35
          3 |         25        0.25       81.60
          7 |        188        1.88       83.48
          8 |      1,642       16.42       99.90
          9 |         10        0.10      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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