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Refers to errors generated by a computer program or a statistical package. Make sure your question is related to STATISTICS, MACHINE LEARNING, or DATA ANALYSIS and is not solely about programming, support, or bugs. Include additional tags referring to the statistical issues involved.

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Logistic predict.glm() function error: factor has new levels

Using my magic crystal ball to see the output of str(DF)... Aha! SAFE_DRVR_PLEDGE_FLG has another level, "", and that in that same row, one of the other variables is missing. So it's not using that …
Aaron - mostly inactive's user avatar