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How to deal with missing data?Hi,
Recently l ran a 2^4 factorial model for an extrusion experiment. I intend to model the quadratic terms including interaction terms.
however some of the points were a little ambitious and the extrusion failed. Hence, I was unable to collect certain responses for these points. I would like some advice on how to proceed. Should I repeat the experiment with less aggressive levels or can I just augment the design with axial points which is lower than the coded level of 1.
ThanksBasic Data Analysis and ModelingDesign of ExperimentsQuality and Process Engineering
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