2010
DOI: 10.1590/s0103-90162010000100016
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Specific residue: application of orthogonal contrasts when heteroscedasticity is present

Abstract: When experimental data are submitted to analysis of variance, the assumption of data homoscedasticity (variance homogeneity among treatments), associated to the adopted mathematical model must be satisfied. This verification is necessary to ensure the correct test for the analysis. In some cases, when data homoscedascity is not observed, errors may invalidate the analysis. An alternative to overcome this difficulty is the application of the specific residue analysis, which consists of the decomposition of the … Show more

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