Fit Model - Effect Summary - no PValues?

Lcheng — Fri, 09 Jun 2023 00:34:49 GMT

Question: Why are there no LogWorth and PValues showing up in my Effect Summary section after I Fit Model an output with several inputs & second degree inputs (Factorial to Degree 2)?

Context:

Everything is continuous except 1 nominal dataset. I first did 6 singular outputs. it gave me some results so I could use that to eliminate the 2 at the end.

But then I tried adding 2nd order inputs and:

Am I doing something wrong here or interpreting it wrong?

Re: Fit Model - Effect Summary - no PValues?

Dan_Obermiller — Sat, 12 Jun 2021 13:13:12 GMT

Not all of the details of your model are provided, but in the second case I see a "Singularity Details" message. That is the cause of your lack of PValues. You have an over-specified model, meaning the collected data is not sufficient to estimate all of the model terms. In mathematical terms you have a matrix that cannot be inverted.

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Fit Model - Effect Summary - no PValues?

Re: Fit Model - Effect Summary - no PValues?