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Flashcards covering key concepts from the Further Statistical Analysis MA-292 Sheet 2 notes.
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Mann-Whitney U Test
Nonparametric test used for two independent samples; equivalent to an unpaired t-test.
Wilcoxon Signed-Rank Test
Nonparametric test used for two dependent samples (paired data); equivalent to a paired t-test.
Nonparametric tests underlying procedure
Rank the data, and use these ranks to perform the test, rather than the raw data itself.
Hypotheses for Wilcoxon signed-rank test
H0: the median difference is 0; H1: the median difference is not 0.
Corrected R code to install nortest package
install.packages("nortest")
Purpose of lillie.test(Differences) in R
Test of normality on 'Differences'.