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I'm following an SPSS guide online, and the procedure is to first test for a three-way interaction. In my case there was no sig. three-way interaction. Then the procedure asks me to consider two-way interactions. However, the guide says if I do not have any sig. two-way interactions, then I can stop the analysis there. Why? How come I don't consider the main effects of each factor individually? In a two-way ANOVA, you consider both the interactions and the main effects.

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Either you are misreading the guide or the guide is wrong. What you are saying makes no sense. Can you post a link to the guide or give an exact quote of the passage?

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  • $\begingroup$ Yes, it doesn't make sense. That's why I'm asking. Screenshot: imgur.com/a/Q3w6i. $\endgroup$ – user2974849 Jul 2 '15 at 11:32
  • $\begingroup$ That looks like someone made a typo. Or maybe it's just an error. $\endgroup$ – Peter Flom Jul 2 '15 at 12:28

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