effect of parameter not being part of design, how to evaluate, treat it as covariate or something else
We would like to do response surface design for optimization of two formulation factors… we would like to consider compression force as well as it might have an effect, but could we not have it to be part of the design because it may be adjusted differently for different formulations… in that case could we treat compression force as covariate then, and how?Or what else we could do…?@Ben_BarrIngh