Frequencies for first 10,000 rows of region variable in namcs2009 dataset : geographic | region | Freq. Percent Cum. ------------+----------------------------------- northeast | 1,756 17.56 17.56 midwest | 3,261 32.61 50.17 south | 3,317 33.17 83.34 west | 1,666 16.66 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016