Frequencies for first 10,000 rows of attend variable in natl1976 dataset :

  Person in |
 Attendance |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,756       97.56       97.56
          2 |        223        2.23       99.79
          3 |         14        0.14       99.93
          9 |          7        0.07      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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