This is the program for the 2010 Joint Statistical Meetings in Vancouver, British Columbia.

Abstract Details

Activity Number: 678
Type: Contributed
Date/Time: Thursday, August 5, 2010 : 10:30 AM to 12:20 PM
Sponsor: Section on Physical and Engineering Sciences
Abstract - #308954
Title: Dispersion Contrasts
Author(s): Richard N. McGrath*+
Companies: Bowling Green State University
Address: Applied Statistics and Operations Research, Bowling Green, OH, 43403,
Keywords: variance ; fractional factorial ; replication
Abstract:

Our interest lies in identifying dispersion effects in replicated designed experiments based on orthogonal arrays. Such experiments include designs for studies with all factors at two levels such as the $2^k$ and $2^{k-p}$ series and Plackett-Burman designs. Three level designs ($3^k$, $3^{k-p}$) as well as designs with mixed numbers of levels (such as OA18) are also investigated. Exact tests are developed under a normality assumption as well as approximate and robust methods.


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