Frequencies for first 10,000 rows of msa variable in natlterr2003 dataset : Metropolita | n | Statistical | Area U;R | Freq. Percent Cum. ------------+----------------------------------- 0 | 1,599 15.99 15.99 60 | 374 3.74 19.73 470 | 401 4.01 23.74 1310 | 854 8.54 32.28 4840 | 558 5.58 37.86 6360 | 948 9.48 47.34 7440 | 5,266 52.66 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 22 Dec 2015