Frequencies for first 10,000 rows of sex variable in uswbo19ages dataset : Sex | Freq. Percent Cum. ------------+----------------------------------- Male | 4,953 49.53 49.53 Female | 5,047 50.47 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 2 Jan 2018