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Thread: DoE, RSM: What does Factor A*Factor A mean?

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    Question DoE, RSM: What does Factor A*Factor A mean?




    Hello everyone,

    For my thesis I have to make an optimization using DoE. Most of it is clear to me now, but there is one thing which i don't quite understand (see attachment, red circles). What is the difference between A and A*A? If anyone could help me with this I'd be greatful!

    Thank you in advance
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    Re: DoE, RSM: What does Factor A*Factor A mean?

    Hi,
    it is a quadratic term in the regression equation.
    regards

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    Re: DoE, RSM: What does Factor A*Factor A mean?

    Okay, thanks. But what does it mean in the table for significance of factors. Because Factor A is significant, but A*A is not. I don't understand how they are related to eachother in that way

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    Re: DoE, RSM: What does Factor A*Factor A mean?


    hi,
    it just means that the linear model in A is enough, you dont need the quadratic term.

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