Frequencies for first 10,000 rows of prov3230 variable in pos2002 dataset : state | abbreviatio | n | Freq. Percent Cum. ------------+----------------------------------- AK | 212 2.12 2.12 AL | 1,607 16.07 18.19 AR | 1,696 16.96 35.15 AZ | 1,197 11.97 47.12 CA | 5,288 52.88 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 26 Jan 2016