Frequencies for first 10,000 rows of vctnl_srvc_onst_nrsdnt_sw variable in pos1996 dataset : srv: | vocational- | onsite-non | resid | Freq. Percent Cum. ------------+----------------------------------- | 7,254 72.54 72.54 N | 2,729 27.29 99.83 Y | 17 0.17 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 17 May 2017