Regression – What’s the Difference Between Binomial Regression and Logistic Regression

binomial distributionlogisticregression

I've always thought of logistic regression as simply a special case of binomial regression where the link function is the logistic function (instead of, say, a probit function).

From reading the answers on another question I had, though, it sounds like I might be confused, and there is a difference between logistic regression and binomial regression with a logistic link.

What's the difference?

Best Answer

Logistic regression is a binomial regression with the "logistic" link function:

$$g(p)=\log\left(\frac{p}{1-p}\right)=X\beta$$

Although I also think logistic regression is usually applied to binomial proportions rather than binomial counts.

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