Frequencies for first 10,000 rows of exercise variable in namcs1993 dataset :

   exercise |
 couns/educ |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,116       91.16       91.16
          1 |        884        8.84      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 28 Mar 2016