Frequencies for first 10,000 rows of f_mar_g variable in natlterr2012 dataset : Mother's | Marital | Status | (Revised) R | Freq. Percent Cum. ------------+----------------------------------- 0 | 1,329 13.29 13.29 1 | 8,671 86.71 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 5 May 2016