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Activity Number:
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154
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Type:
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Contributed
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Date/Time:
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Monday, July 30, 2007 : 10:30 AM to 12:20 PM
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Sponsor:
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ENAR
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| Abstract - #310065 |
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Title:
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Step-Down Pairwise Comparisons Based on the Studentized Range Distribution
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Author(s):
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Scott Richter*+ and Melinda McCann
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Companies:
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The University of North Carolina at Greensboro and Oklahoma State University
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Address:
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Mathematics and Statistics, Greensboro, NC, 27402,
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Keywords:
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multiple comparisons ; step-down ; pairwise
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Abstract:
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A step-down testing procedure, based on Tukey's multiple pairwise testing procedure is proposed. The proposed procedure is more powerful than Tukey's procedure while still maintaining strong control of the familywise error rate. A simulation study shows that the new procedure is more powerful than a similar technique based on Bonferroni's adjustment, and compares favorably to the multiple range procedure of Ryan, Einot, Gabriel & Welch. A computer is recommended to implement the full step-down method. However, a simpler version using only two steps that is only slightly less powerful is presented. The two-step test can be carried out using an existing table of the studentized range statistic.
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- The address information is for the authors that have a + after their name.
- Authors who are presenting talks have a * after their name.
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