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hellboy
2007 Oct 11
2
Type III sum of squares and appropriate contrasts
I am running a two-way anova with Type III sums of squares and would
like to be able to understand what the different SS mean when I use
different contrasts, e.g. treatment contrasts vs helmert contrasts. I
have read John Fox's "An R and S-Plus Companion to Applied Regression"
approach -p. 140- suggesting that treatment contrasts do not usually
result in meaningful results with Type