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Showing 1 to 4 of 4 for “"Permutation Procedure"”.
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Analysis of multispecies microcosm experiments
… to compare several methods. The Multi-Response Permutation Procedure (MRPP) and a regression method incorporating a correlation structure are found to be the most powerful procedures for detecting treatment differences. The MRPP is particularly suited to experiments with replication and when the …
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Pseudomonas spp. Isolated from Soybean Nodules Promote Soybean Growth and Nitrogen Fixation
… multivariate analyses: multiple response permutation procedure (MRPP) and permutational multivariate analysis of variance (PERMANOVA). Both analyses showed soybeans of both cultivars treated with Pancake differed from controls following the first harvest but not the second. When analyzed …
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Level of UV-B Radiation Influences the Effects of Glyphosate-Based Herbicide on Fitness of the Spotted Salamander
<p>Numerous causes have been implicated in contributing to amphibian population declines since the 1980's, with habitat modification, ultraviolet radiation (UV-B) and environmental contaminants (such as glyphosate-based herbicide) being among the most common. This study identifies the effects of a …
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The Isotonic Regression Framework
… application of a variation of a "closed testing" procedure. The correction for multiple comparisons is made for the first method by an a-priori estimation of the overall significance level in a permutation procedure. In the second method the control for the expense of the type I error is effected …