Authors: Auer, Corinna
Kunert, Joachim
Title: On a heuristic analysis of highly fractionated 2 n factorial experiments
Language (ISO): en
Abstract: The paper deals with a method for the analysis of highly fractionated factorial designs proposed by Raghavarao and Altan (2003). We show that the method will find "active" factors with almost any set of random numbers. Once that an alias set is found active, Raghavarao and Altan (2003) claim that their method can resolve the alias structure of the design and identify which of several confounded effects is active. We show that their method cannot do that. The error in Raghavarao and Altan's (2003) arguments lies in the fact that they treat a set of highly dependent (sometimes even identical) F-statistics as if they were independent.
Subject Headings: fractional factorial designs
half-normal plot
heuristic arguments
active effects
alias set
Issue Date: 2004
Provenance: Universitätsbibliothek Dortmund
Appears in Collections:Sonderforschungsbereich (SFB) 475

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