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comparing bootstrapped confidence intervals

To: s-news@lists.biostat.wustl.edu
Subject: comparing bootstrapped confidence intervals
From: "Data Analytics Corp." <dataanalytics@earthlink.net>
Date: Wed, 06 Feb 2008 14:49:06 -0500
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Hi,

I have a question about comparing bootstrapped confidence intervals. I have a slightly complicated function to calculate a statistic called a penalty often used in the food sensory area. Basically, it's just the difference between the middle point on a 5-point liking scale and the weighted average of the other points. This is done for all attributes of a product. Let's say there are five attributes so there are 5 penalties. I want to bootstrap a 95% confidence interval for each penalty (easy to do using the bootstrap and limits.bca functions) and then plot the intervals on one graph similar to what multicomp does. The goal is to tell the client which penalties are different. Is this legitimate to do with the bootstrapped intervals? Any opinions?

Thanks,

Walt Paczkowski

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