Frequencies for first 10,000 rows of prov2400 variable in pos2010 dataset : SPEC: | PLASTIC | Freq. Percent Cum. ------------+----------------------------------- | 9,632 96.32 96.32 N | 215 2.15 98.47 Y | 153 1.53 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016