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Activity Number:
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198
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Type:
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Contributed
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Date/Time:
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Monday, August 7, 2006 : 2:00 PM to 3:50 PM
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Sponsor:
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Section on Statistical Graphics
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| Abstract - #306993 |
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Title:
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Simple Visualizations of Paired Comparisons
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Author(s):
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Spencer Graves*+ and Hans-Peter Piepho
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Companies:
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PDF Solutions, Inc. and University of Hohenheim
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Address:
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333 W. San Carlos Street, San Jose, CA, 95110,
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Keywords:
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multiple comparisons
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Abstract:
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This presentation describes and compares two alternative methods for converting a table of k*(k-1)/2 p-values comparing k different items (e.g., levels of a factor) into a simple visual summary of the significant differences. One of these methods is a "letter-based representation" previously described by Piepho (2004). The other is a simple graphic identifying the "neighbors" that are not significantly different from each of the k items.
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