Frequencies for first 10,000 rows of attend variable in natl1987 dataset :

  Person in |
 Attendance |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,847       98.47       98.47
          2 |        113        1.13       99.60
          3 |         31        0.31       99.91
          9 |          9        0.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 3 Jan 2016