Frequencies for first 10,000 rows of csex variable in natl1994 dataset : Sex | Freq. Percent Cum. ------------+----------------------------------- 1 | 5,075 50.75 50.75 2 | 4,925 49.25 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Dec 2015