Frequencies for first 10,000 rows of sex variable in natlterr2015 dataset : Sex of | Infant M | Male | Freq. Percent Cum. ------------+----------------------------------- F | 4,856 48.56 48.56 M | 5,144 51.44 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 20 Oct 2016