Frequencies for first 10,000 rows of dmar variable in natl1993 dataset : Marital | Status of | Mother | Freq. Percent Cum. ------------+----------------------------------- 1 | 6,468 64.68 64.68 2 | 3,532 35.32 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Dec 2015