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- Chi-Square Test for a Two-Way Table (OPG)

Aug 31, 2014 2:32 PM
(2435 views)

**Topics: **Using Fit Y by X for Chi-Square test of homogeneity and independence.

**Category:** Basic Inference - Proportions and Means

**JMP features: ***Analyze > Fit Y by X.*

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03-09-2017
02:31 PM

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03-09-2017
02:31 PM

09-18-2017
09:26 AM

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09-18-2017
09:26 AM

You can choose either variable to be the X, and the other variable to be the Y.

Even though this makes it sound like you are hypothesizing that one of the variables is a predictor and the other is a response, the test itself doesn't do this.

The Chi-Square Test of independence is **eqivalent** to testing if the proportions in one variable (Y) differ based on the groups in the other variable (X). Or vice versa: the Chi-Square Test of independence is eqivalent to testing if the proportions in one variable (X) differ based on the groups in the other variable (Y). So you can put either variable in the Y box, and put the other variable in the X box, and you will get a Chi-Square test of independence between those two variables.

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