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Re: plackett burman design

To: Fırat ÖZDEMİR <firat.ozdemir@deu.edu.tr>
Subject: Re: plackett burman design
From: Spencer Graves <spencer.graves@pdf.com>
Date: Wed, 22 Oct 2003 07:17:13 -0700
Cc: s-news@wubios.wustl.edu
In-reply-to: <001301c398a0$9cdfae40$50421bc2@firat>
References: <001301c398a0$9cdfae40$50421bc2@firat>
User-agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax)
Have you tried searching "www.google.com" for "Plackett-Burman design"? I just got several hits there. Most modern books on experimental design, e.g., Box, Hunter, Hunter (1978) Statistics for Experimenters (Wiley) describe Plackett-Burman designs and cite Plackett and Burman's original paper. As far as I know, the standard analysis involves computing coefficients for a saturated model (or "effects" = twice the corresponding regression coefficient) and making a normal probability plot of those numbers. Points obviously off the line are considered to be statistically significant. A gap in the middle or an offset from mean 0 indicate an outlier (Box on Quality and Discovery, Wiley, 2000). Wu and Hamada (2000) Experiments (Wiley) recommend an advanced stepwise regression. I've developed S-Plus code for my version of advanced stepwise regression, downloadable from "www.prodsyse.com". Hope this helps. spencer graves
Fırat ÖZDEMİR wrote:

is there any paper, web page or something else available where I can have detailed information on analysis of plackett-burman designs firat.ozdemir@deu.edu.tr <mailto:firat.ozdemir@deu.edu.tr>



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