Frequencies for first 10,000 rows of marsmsarflg variable in natl1981 dataset : Marital | Status (by | SMSA) flag | Freq. Percent Cum. ------------+----------------------------------- 0 | 3,978 39.78 39.78 1 | 6,022 60.22 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 3 Jan 2016