Is there a relation between chi-squared test and logistic regression model in a similar manner between ANOVA and linear regression?

  • $\begingroup$ @Jeremy can you show a small example? I wouldn't expect it to be actually true (except approximately) and I can't seem to generate an example that shows it. I'd have expected that maybe it could happen with the G-test rather than the ordinary chi-square. $\endgroup$
    – Glen_b
    Commented Sep 17, 2014 at 22:53

1 Answer 1


If the setting is a $r\times 2$ contingency table, crossclassifying a binary variable with an (unordered) factor with $r$ levels, you can use binary logistic regression or a chi-squared test, and you will get very similar answers.

The logistic regression will give the likelihood-ratio test, and the Pearson Chi-square is the corresponding score test. Details: G-test vs Pearson's chi-squared test. For an $r\times c$ contingency table (both factors unordered) much the same will be true replacing multinomial logistic regression. So logistic regression can be a good starting point if you need some extensions/generalizations to these chi-squared tests.


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