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2010 Sep 29
1
Understanding linear contrasts in Anova using R
...of (coeff times means) i.e. 0 (intercept), .0425, 7.989, .3483, -6.66 # and these are not a linear (or other nice pretty) function of est. from R. # Just as a check, I forced intercept through zero with with deviation scores or -1 in model. # Now force intercept to 0 by using deviation scores devdv <- dv-mean(dv) model5 <- lm(devdv~order.group) summary(model5) #Same as above except intercept = 0 # Now do it by removing the intercept model6 <- lm(dv~order.group -1) summary(model6) # Weird because coeff = cell means # Estimate Std. Error t value Pr(>|t|) # orde...