Frequencies for first 10,000 rows of prov4325 variable in pos2001 dataset : application | total | annual test | vol | Freq. Percent Cum. ------------+----------------------------------- 0 | 10,000 100.00 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016