doi: 10.1073/pnas.91.1.225.
Extending nondirectional heterogeneity tests to evaluate simply ordered alternative hypotheses
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- PMID: 8278369
- PMCID: PMC42919
- DOI: 10.1073/pnas.91.1.225
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Extending nondirectional heterogeneity tests to evaluate simply ordered alternative hypotheses
Proc Natl Acad Sci U S A.
.
Abstract
Biologists frequently use nondirectional heterogeneity tests when comparing three or more populations because a suitable directional test is unavailable or is not practical to implement. Here we describe a test, the ordered heterogeneity test, that permits testing against simply ordered alternative hypotheses in the context of almost any nondirectional test. The test has a wide range of parametric and nonparametric applications. Graphs are developed for calculating exact P values.
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