Factor Screening from Definitive Screening Design?

11 May 2016 1 5K Report

Hi,

I'm facing some uncertainties in factor screening from a Definitive Screening Design with 3 continues and 3 categorical factors. Is it statatisticaly allowed to use the Stepwise procedures from the GLM ANOVA in Minitab 17 to include main factors and interactions in order to screen out significant factors?

Thanks for reading, Adnan!

Rolf Sundberg

Adnan, it sounds as if it is not without risk to rely on this. Add your own judgement and common sense! You should for example not include an interaction without already having at least one of the corresponding main effects also as significant. This type of hierarchy is not automatic in the stepwise procedure, I presume (without knowing Minicab 17).

Best wishes,

Rolf S

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Science method

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