Frequencies for first 10,000 rows of econdp_11 variable in mort2006 dataset : Part/line | number on | certificate | 11 | Freq. Percent Cum. ------------+----------------------------------- 6 | 4 0.04 0.04 . | 9,996 99.96 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Dec 2015