I done a binary regression,it's possible that the the plot of residual vs Predict has two different line? I never see before one like this
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Standrdized residuals don't make sense for logistic regression models. Instead, you should bin and group your predictors and then analyze deviance residuals. – Demetri Pananos Dec 19 '19 at 19:22
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So default diagnostic plot are meaningless for binary regression – Simone Chiodi Dec 19 '19 at 19:30
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Yes. You have to do a little extra work to get some meaningful diagnostics. Read up on deviance residuals and deviance diagnostic plots. – Demetri Pananos Dec 19 '19 at 19:35