2pFactorial Experiments with the Factors Applied Sequentially

Abstract

In the application of factorial experiments in industry, it is often necessary to apply the factors sequentially. For 2 p experiments in which (a) multiple testing on each experimental unit is possible and not degrading, (b) the effects of the factors are permanent, and (c) the low level of a factor is the absence of that factor, a design and an analysis are presented which allow the estimation and testing of order effects as well as the usual main and interaction effects of the factors.