The Design and Analysis of 2k-p x 2q-r Split Plot Experiments

Article

Bisgaard, Søren   (2000, ASQ)   University of St. Gallen, Switzerland

Journal of Quality Technology    Vol. 32    No. 1
QICID: 13859    January 2000    pp. 39-56
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Article Abstract

[This abstract is based on the author's abstract.] The design and analysis of split plot experiments is discussed from a classical factorial and fractional factorial standpoint. Emphasis is placed on the special case of split plot designs composed of two-level fractional factorials. It is shown that the justification for split plot designs is either because of physical constraints on trial execution or because of economic reasons. Design and environmental factors are not in themselves necessarily good reasons for using inner and outer array designs, except when particular confounding structures are desired. General expressions are discussed for finding the defining relations with and without split plot confounding. Also noted are the economics of split plot experiments, including savings in runs and increases in information.

Keywords

Design of experiments (DOE),Factorial experiments,Graphical methods


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