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What is complete or quasi-complete separation in logistic/probit regression and how do we deal with them?

April 26, 2017COMPLETE deal logistic probit quasi-complete REGRESSION Separation

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What is complete or quasi-complete separation in logistic/probit regression and how do we deal with them?

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Occasionally when running a logistic/probit regression we run into the problem of so-called complete separation or quasi-complete separation. On this page, we will discuss what complete or quasi-complete separation is and how to deal with the problem when it occurs. Notice that the example data set used for this page is extremely small. It is for the purpose of illustration only.