Frequencies for first 10,000 rows of dgnstc_xray_onst_rsdnt_sw variable in pos1996 dataset : srv: | xray-onsite | -residents | Freq. Percent Cum. ------------+----------------------------------- | 7,254 72.54 72.54 N | 502 5.02 77.56 Y | 2,244 22.44 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 17 May 2017