Frequencies for first 10,000 rows of econdp_8 variable in mortterr2007 dataset : Part/line | number on | certificate | 8 | Freq. Percent Cum. ------------+----------------------------------- 3 | 2 0.02 0.02 4 | 2 0.02 0.04 6 | 62 0.62 0.66 . | 9,934 99.34 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Dec 2015