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One-way ANOVA Inference for one-way ANOVA - page 8 / 41

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Sources of Variation

Sums of squares measure three sources of variation: Groups (variation among group means), Error (variation within groups, or residual variation), and Total

SST = SSG + SSE

Degrees of Freedom (N observations, I sample means):

DFT = DFG + DFE

(N-1) = (I-1) + (N-I)

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