Hi, I am working on GLM models. However I am having some problems that I would like that someone give me some guidance One of the explanatory variables ERECTANGLE is not present in all the individual rows. 1 when I delete the rows for which the variable ERECTANGLE is missing I get the following results Null deviance: 290.884 on 774 degrees of freedom Residual deviance: 85.863 on 760 degrees of freedom AIC: 11385 2- when I run the model with all the rows including the null ECTANGLE I get the following results Null deviance: 480.75 on 1232 degrees of freedom Residual deviance: 140.30 on 1211 degrees of freedom AIC: 18113 So I am curious on how the algorithm functions in terms of model adjustment I will be waiting for your answer Thanks Nuno _________________________________________________________________
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