Sphericity is an assumption of repeated measures ANOVA. It states that the variance of all pairwise differences is constant.
Sphericity is an assumption of repeated measures ANOVA. It states that the variance of all pairwise differences is constant.
Questions tagged [sphericity]
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Sphericity. Mauchly's W of 1.000, df 0, and Sig of . . Nothing
The question is about sphericity of repeated measures ANOVA (2 within factors)x(3 between factors). When I check for violations of the sphericity assumption Mauchly's test of sphericity gives me a Mauchly's W of 1.000, df 0, and Sig of . . Nothing.…
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Mauchly's test of sphericity result interpretation
How to interpret the following result from Mauchly's test conducted in R?
Mauchly's test of sphericity Contrasts orthogonal to ~1
data: SSD matrix from lm(formula = Controls3 ~ 1)
W = 0, p-value = 1
From my understanding, a p-value of 1 should…
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