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tp4490211p4490211
2012 Mar 20
2
anova.lm F test confusion
I am using anova.lm to compare 3 linear models. Model 1 has 1 variable,
model 2 has 2 variables and model 3 has 3 variables. All models are fitted
to the same data set.
anova.lm(model1,model2) gives me:
Res.Df RSS Df Sum of Sq F Pr(>F)
1 135 245.38
2 134 184.36 1 61.022 44.354 6.467e-10 ***
anova.lm(model1,model2,model3) gives