Chi Square Test for three variables

2015 9 29
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更新时间：2018 11 16
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I am having three vectors with binary results each from a different test condition (from the same subjects).
How do I perform a chi square test to see whether the participants performed equally well in all three conditions?
I found this previous answer for two groups: click
But how do I extend it to three variables?

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回答（1 个）

Star Strider
Star Strider 2015-9-29

1 个投票

A Chi-Squared test is generally restricted to comparing two frequencies. From what you described, a repeated-measures ANOVA is likely most appropriate. Consult with a statistician in your organisation for the correct analysis.
Ideally, you designed your study with the statistical analysis in mind before you began it. Designing you study after you collected your data is not the optimal order of events.

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