A comparison of different synchronized permutation approaches to testing effects in two-level two-factor unbalanced ANOVA designs

Sonja Hahn () and Luigi Salmaso ()
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Sonja Hahn: Friedrich-Schiller-University Jena
Luigi Salmaso: University of Padova

Statistical Papers, 2017, vol. 58, issue 1, No 7, 123-146

Abstract: Abstract Analysis of variance (ANOVA) is used to compare the means of various samples. Parametric ANOVA approaches assume normally distributed error terms within subsamples. Permutation tests like synchronized permutation tests are computationally intensive and distribution free procedures. Hence they overcome the limitations of parametric methods. Unbalanced designs with differing subsample sizes are quite frequent in various disciplines. There is a broad literature about unbalanced designs and parametric testing. For permutation tests this topic received some attention recently. This paper extends the synchronized permutation method to unbalanced two-level ANOVA designs. A simulation study investigates the behavior of different procedures for various types of unbalanced designs. It compares the results to other permutation approaches. The synchronized permutation method yields comparable results to the best performing competing permutation approaches. However the approach is limited to certain kinds of unbalanced designs.

Keywords: Synchronized permutation; Conditional testing procedures; Nonparametric statistics; Unbalanced ANOVA; 62G09; 62G10 (search for similar items in EconPapers)
Date: 2017
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Citations: View citations in EconPapers (2)

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DOI: 10.1007/s00362-015-0690-2

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