Frequencies for first 10,000 rows of attend variable in natl2008 dataset :

  Attendant |
        U;R |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      9,663       96.63       96.63
          2 |        109        1.09       97.72
          3 |        192        1.92       99.64
          5 |         34        0.34       99.98
          9 |          2        0.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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