Frequencies for first 10,000 rows of attend variable in natl2013 dataset :

  Attendant |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,521       65.21       65.21
          2 |        291        2.91       68.12
          3 |      2,737       27.37       95.49
          4 |        329        3.29       98.78
          5 |        104        1.04       99.82
          9 |         18        0.18      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 22 Dec 2015