Frequencies for first 10,000 rows of othrexam variable in namcs2004 dataset : other exam | Freq. Percent Cum. ------------+----------------------------------- 0 | 7,555 75.55 75.55 1 | 2,445 24.45 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016