Frequencies for first 10,000 rows of metrores variable in natlterr2000 dataset : Met/Nonmet | county of | residence | Freq. Percent Cum. ------------+----------------------------------- 1 | 8,429 84.29 84.29 2 | 1,571 15.71 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Dec 2015