On Tue, 24 Jan 2006, Florent Bresson wrote: OK, this is not super-convenient at present, but here's an example using Ramanathan's data7-2 salary data file. open data7-2 smpl GENDER=0 --restrict genr W0 = WAGE smpl GENDER=1 --restrict --replace genr W1 = WAGE smpl full meantest W0 W1 In the GUI program you can also do this under Utilities/Test Statistic calculator. * Select the "2 means" tab * In the upper panel, check "Use variable from dataset", and in the selection box, type "WAGE(GENDER=0)". Press Enter in this box to get the sample statistics calculated. * In the lower panel, again check "Use variable from dataset", type in "WAGE(GENDER=1)" and Enter. * Click "OK" for the test. Allin Cottrell