Please can you help me
I have the following problem:
I have selected an lm model through the step procedure which visualize for each step the AIC value; then I have calculated for the initial model and the selected one the AIC using the funnction AIC. The results are different.What's happened?

Emilia Rocco
Dipartimento di Statistica  "G. Parenti"
Università di Firenze
e-mail: rocco@ds.unifi.it

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