DoE - testing parameters from different process stages
Hello, A DoE has been performed on a process. The process included step A, step B, step C and step D. The DoE tested two parameters from step B and two parameters from step C in one single design. All parameters were continuous. I am wondering if next time it would not be better to do 2 separate DoEs: one on step B and one on step C. Is there any principle in DoE that says that one should avoid mi...