https://community.jmp.com/t5/Discussions/How-does-AICc-criterion-and-Combined-rules-interact-in-Stepwise/m-p/805967#M98438 <P>As an entry-level user of JMP but with a bit of statistical knowledge. I encountered with a problem when trying to use the stepwise fit platform to develope a regression model for my DoE dataset.&nbsp;<BR /><BR />I read the JMP help book and understand how combined rule applied to p-value based stepwise regression (a joint F-test and another partial F-test of interaction effect when added precedent main effects). However, I am a bit confused when transfer such understanding to AICc or BIC criteria. I noticed that my AICc-combined model and AICc-no rule model are different.</P><P>&nbsp;</P><P>Therefore my question is: when I select AICc and combine rules together. How does the stepwise regression work? It still do a joint addition (say an interaction effect and 2 associated main effects) and calculate AICc? Besides, also calculate another AICc of adding only interaction effect. Then how the comparison of AICc is carried out?<BR /><BR />Hope my description is clear and feel free to let me know if further clarification is needed.</P><P>&nbsp;</P><P>Best<BR />Yun</P> Wed, 16 Oct 2024 05:52:26 GMT Yun 2024-10-16T05:52:26Z https://community.jmp.com/t5/Discussions/How-does-AICc-criterion-and-Combined-rules-interact-in-Stepwise/m-p/805967#M98438 <P>As an entry-level user of JMP but with a bit of statistical knowledge. I encountered with a problem when trying to use the stepwise fit platform to develope a regression model for my DoE dataset.&nbsp;<BR /><BR />I read the JMP help book and understand how combined rule applied to p-value based stepwise regression (a joint F-test and another partial F-test of interaction effect when added precedent main effects). However, I am a bit confused when transfer such understanding to AICc or BIC criteria. I noticed that my AICc-combined model and AICc-no rule model are different.</P><P>&nbsp;</P><P>Therefore my question is: when I select AICc and combine rules together. How does the stepwise regression work? It still do a joint addition (say an interaction effect and 2 associated main effects) and calculate AICc? Besides, also calculate another AICc of adding only interaction effect. Then how the comparison of AICc is carried out?<BR /><BR />Hope my description is clear and feel free to let me know if further clarification is needed.</P><P>&nbsp;</P><P>Best<BR />Yun</P> Wed, 16 Oct 2024 05:52:26 GMT https://community.jmp.com/t5/Discussions/How-does-AICc-criterion-and-Combined-rules-interact-in-Stepwise/m-p/805967#M98438 Yun 2024-10-16T05:52:26Z