The chapter covers the use of ordinal dependent variables like Likert scale measures for research hypotheses.The Wilcoxon Rank Sum test is described using a public administration example.Students learn how to conduct the rank sum test by hand and with the R Commander.Interpretation and statistical significance are the foci of the R Commander output.The Wilcoxon Signed Rank test is explained as is how it differs from the Rank Sum Test.Instructions for conducting and interpreting the Signed Rank test in the R Commander are included.
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