From T-test to ANOVA.pdf

-PreparedbyMingzhuQi--April,2004-SPSSSPSSFromTFromT--testtoANOVAtesttoANOVATheTTheT--testtest�Thet-testassesseswhetherthemeansoftwogroupsarestatisticallydifferentfromeachother.Figure1.Idealizeddistributionsfortreatedandcomparisongroupposttestvalues.Isthereadifference?WhatdoesitmeantosaythattheaveragesWhatdoesitmeantosaythattheaveragesfortwogroupsarestatisticallydifferent?fortwogroupsarestatist...