Frequencies for first 10,000 rows of prov3355 variable in pos1997 dataset : srv: occup | ther-onsite | -non resid | Freq. Percent Cum. ------------+----------------------------------- | 7,410 74.10 74.10 N | 2,488 24.88 98.98 Y | 102 1.02 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016