Design & Factor Selection
Design Types & Categories
Fixed Effects - Fixed effects are factors chosen at specific levels of interest, spanning a region of interest, for which a systematic effect on the model response is expected. In a separate context, factors are said to be fixed when held at a constant level during an experiment. The alternative to a fixed effect is a random effect.
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).