A generalization of the Wilcoxon rank-sum test where a score function is applied to the ranks. Any scores from Rfit can be used as well as user defined. Default is to perform a Wilcoxon analysis.
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x |
m x 1 vector |
y |
n x 1 vector |
alternative |
one of 'two.sided', 'less', or 'greater' |
scores |
an object of class scores |
conf.int |
logical indicating if a confidence interval should be estimated |
conf.level |
desired level of confidence for interval |
Test is based on T = sum_i a(R(y_i)) where R is the rank based on the combined sample and a(t) = varphi(t/(N+1)). Confidence interval, if requested, is based on call to Rfit.
statistic |
Standardized value of test statistics |
Sphi |
Test statistic |
p.value |
p-value |
conf.int |
confidence interval for shift in location |
estimate |
point estimate for shift in location |
John Kloke kloke@biostat.wisc.edu, Joseph McKean
Hettmansperger, T.P. and McKean J.W. (2011), Robust Nonparametric Statistical Methods, 2nd ed., New York: Chapman-Hall.
wilcox.test
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Questions? Problems? Suggestions? Tweet to @rdrrHQ or email at ian@mutexlabs.com.
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