Frequencies for first 10,000 rows of sex variable in person dataset :

        sex |      Freq.     Percent        Cum.
------------+-----------------------------------
          F |      5,000       50.00       50.00
          M |      5,000       50.00      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 2 May 2016