Frequencies for first 10,000 rows of othrexam variable in namcs2003 dataset : other exam | Freq. Percent Cum. ------------+----------------------------------- 0 | 7,117 71.17 71.17 1 | 2,883 28.83 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016