Frequencies for first 10,000 rows of attend variable in natl2009 dataset :

  Attendant |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,085       90.85       90.85
          2 |        466        4.66       95.51
          3 |        372        3.72       99.23
          4 |         55        0.55       99.78
          5 |         21        0.21       99.99
          9 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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