Frequencies for first 10,000 rows of csex variable in natlterr1999 dataset : Sex | Freq. Percent Cum. ------------+----------------------------------- 1 | 5,208 52.08 52.08 2 | 4,792 47.92 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Dec 2015