Design & Factor Selection
Design Types & Categories
Nested Designs - Designs in which unique levels of one or more factors are assigned within a unique level of another factor-level to form a run. See Hierarchical designs.
Learn more about the DOE tools for designed experiments in Six Sigma Demystified (2011, McGraw-Hill) by Paul Keller, in his online Intro. to DOE short course (only $99) or online Advanced Topics in DOE short course (only $139), or his online Black Belt certification training course ($875).