Frequencies for first 10,000 rows of sex variable in natlterr2005 dataset : Sex U;R | Freq. Percent Cum. ------------+----------------------------------- F | 4,867 48.67 48.67 M | 5,133 51.33 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Dec 2015