Frequencies for first 10,000 rows of restatus variable in natl1980 dataset : Resident | status | Freq. Percent Cum. ------------+----------------------------------- 1 | 7,522 75.22 75.22 2 | 2,196 21.96 97.18 3 | 281 2.81 99.99 4 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 3 Jan 2016