Frequencies for first 10,000 rows of prov1395 variable in pos1995 dataset : technologis | t - | grandfather | ed | Freq. Percent Cum. ------------+----------------------------------- 0 | 9,991 99.91 99.91 1 | 9 0.09 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016