Let's say I've designed my initial main effect screening experiment, where one of the factors is a 3-level categorical (A, B, C).
After the first set of experiments, I'm fairly certain that level B is my process optimum decision and want to augment the design to get two-factor interactions, etc. How do I restrict the design augmentation to only explore the B level? Is it best to just filter the B level data into a new table and go from there?
Thanks!
