Frequencies for first 10,000 rows of prov3405 variable in pos1997 dataset : srv: social | work-offsit | e-residents | Freq. Percent Cum. ------------+----------------------------------- | 7,410 74.10 74.10 N | 2,452 24.52 98.62 Y | 138 1.38 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016