Transcription of Nonparametric Tests for the Interaction in Two-way ...
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Nonparametric Tests for the Interaction in Two-way ...
CONTRIBUTEDRESEARCHARTICLES367 Nonparametric Tests for the Interaction inTwo-way Factorial Designs Using Rby Jos FeysAbstractAn increasing number of R packages include Nonparametric Tests for the Interaction intwo-way factorial designs. This paper briefly describes the different methods of testing and reportsthe resultingp-values of such Tests on datasets for four types of designs: between, within, mixed, andpretest-posttest designs. Potential users are advised only to apply Tests they are quite familiar withand not be guided byp-values for selecting packages and his book Discovering Statistics Using R (Field et al.)
Alvo(2005) developed their own ranking method to test for the interaction in such designs, by comparing the sum of row ranks with the sum of column ranks. The interaction.test function from the StatMethRank package byQuinglong(2015) is an application of this method. The already mentioned nparLD package offers two functions for two-way designs ...
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