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to test a two way ANOVA do you have to test each sample for normality as well as normality for the residuals?

Georgie.Smith
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    Consider the advice at https://stats.stackexchange.com/questions/2492/is-normality-testing-essentially-useless . The answer by Harvey Motulsky would be particularly relevant to your question. – Glen_b Mar 03 '19 at 23:40

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