7.2  Diagnosing Logistic Regression Models
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Just like a linear regression, once a logistic (or any other generalized linear) model is fitted to the data it is essential to check that the assumed model is actually a valid model. A thorough examination of the extent to which the fitted model provides an appropriate description of the observed data, is a vital aspect of the modelling process.
Key Concepts
Objectives

Useful Links
 SAS PROC LOGISTIC diagnostic https://support.sas.com/documentation/cdl/en/statug/63962/HTML/default/viewer.htm#statug_logistic_sect049.htm
 SAS PROC LOGISTIC and ROC https://support.sas.com/documentation/cdl/en/statug/63962/HTML/default/v...