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Analyze 'Factorial Design' or 'Variability' - Difference when used for DOE Analysis?

B

Berg.Jlle

#1
Hi.

What's the right way to analyze a DOE, using "Analyze Factorial Design" or "Analyze Variability" ?
Or maybe the right question is, what's the difference in using of both for DOE analysis ?

tks
 
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Miner

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Admin
#2
Re: Analyze 'Factorial Design' or 'Variability' - Difference when used for DOE Analys

Use "Analyze Factorial Design" when analyzing the means. This is the normal approach used for the vast majority of analyses.

"Analyze Variability" is a specialized approach used only when analyzing the standard deviations of an experiment. This is useful when the goal of the experiment is to find factors and levels that affect the variation and can be set to reduce the variation. The "Pre-process for Analyze Variability" option must be used before using this option. The two commands will perform a log transformation of the standard deviation to normalize the residuals, and will provide additional analysis methods that are better suited for standard deviations.
 
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