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Pairwise Comparisons

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Edited by: Published: 2010
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Pairwise comparisons are methods for analyzing multiple population means in pairs to determine whether they are significantly different from one another. This entry explores the concept of pair-wise comparisons, various approaches, and key considerations when performing such comparisons.

Concept

Because population parameters (e.g., population mean) are unknown, practitioners collect samples for the purpose of making statistical inference regarding those parameters. As an example, many different statistical methods have been developed for determining if there exists a difference between population means. Perhaps most well-known is Student's t test, which is typically used for inferring from two samples if there exists a difference between the corresponding population means (or, in the case of only one sample, determining if the population mean differs from some fixed constant). As an example, ...

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