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    Power Analysis for 3 (between subjects) x 3 (within subjects) ANCOVA - How to

    Hi Stats Community, I'm so pleased to have discovered this resource. I'm having a lot of trouble with my power analysis for my proposal. I'll be doing a 3 x 3 mixed ANCOVA with two covariates. I've used G power but I don't think it takes the repeated measures factor into account, which I think...