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

        Sex |      Freq.     Percent        Cum.
------------+-----------------------------------
          1 |      6,571       65.71       65.71
          2 |      3,188       31.88       97.59
          9 |        241        2.41      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 18 Apr 2016