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

   Ejection |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      7,334       73.34       73.34
          1 |        791        7.91       81.25
          2 |        206        2.06       83.31
          3 |         52        0.52       83.83
          7 |          2        0.02       83.85
          8 |      1,595       15.95       99.80
          9 |         20        0.20      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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