How to design an experiment to compare multiple suppliers with different input ranges?
Hi!Suppose I want to test a product yield from different suppliers. I want to test how temperature (TMP) and rotating speed (SPD) affect yield (YLD) in suppliers (SPL) A and B. However, supplier A had different rotating speed setup than supplier B. Initially we propose a RSM DoE with input variables TMP, SPD and SPL, with SPD as percentage of their full capacity, let's say varying from 40% to 100%...