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RSM: why axial points values are different in presence of blocking factor?

Hi,

I create a RSM with 2 factors, and default settings:

at the next section, I will compare the DOE when I will select the 13 trials CCD-Uniform Precision with 14 trials CCD-Orthogonal Blocks:

Here are the results obtains.
With 13 trials DOE:

14 trials DOE orthogonal:

why the default setting is not respected and changed in presence of a blocking factor ?

Thank for your suggestions.

Florence

Re: RSM: why axial points values are different in presence of blocking factor?

In order for the block design to be orthogonal, the axial distances must also be orthogonal. You cannot get orthogonal blocks without the orthogonal axial distances. At least JMP now changes the axial radio button to be orthogonal. For years it would still leave it at rotatable.

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