Frequencies for first 10,000 rows of prov2400 variable in pos2008 dataset : spec: | plastic | Freq. Percent Cum. ------------+----------------------------------- | 9,650 96.50 96.50 N | 193 1.93 98.43 Y | 157 1.57 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016