How to design a screening DOE for continuous factors that includes 3 levels (zero, intermediate, high concentration)?
Hi all, I am trying to design a screening DOE for multiple continuous biological factors for which I suspect a biphasic relationship between the factors and the outcome (= viability): I first expect a positive correlation up until a certain concentration after which I expect a negative correlation due to toxicity at higher concentrations. How can I take this biphasic association into account when ...