Frequencies for first 10,000 rows of attend variable in natl1985 dataset :

  Person in |
 Attendance |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,879       98.79       98.79
          2 |         78        0.78       99.57
          3 |         39        0.39       99.96
          9 |          4        0.04      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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