Frequencies for first 10,000 rows of prov3300 variable in pos1995 dataset : srv: phys | extender-of | fsite-resid | Freq. Percent Cum. ------------+----------------------------------- | 7,523 75.23 75.23 N | 2,385 23.85 99.08 Y | 92 0.92 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016