Why Does Categorical Variable Anticipated Coefficient Change Sign?
I am looking for a more detailed explanation of why the Anticipated Coefficient changes sign between subsets of a multi-level categorical factor in the DOE platform. From JMP help: Evaluate Design Options (jmp.com)I understand why factor subsets need to be created for a categorical variable with 3 or more levels, and would expect a table like the following to be going on in the background of the ...