Frequencies for first 10,000 rows of attend variable in natl1983 dataset :

  Person in |
 Attendance |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,875       98.75       98.75
          2 |         97        0.97       99.72
          3 |         23        0.23       99.95
          9 |          5        0.05      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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