rankSum {ClassComparison} | R Documentation |
Compute the Wilcoxon rank-sum statistic.
rankSum(data, selector)
data |
numeric vector |
selector |
logical vector the same length as |
This is an efficient function to compute the value of the Wilcoxon
rank-sum statistic without the extra overhead of the full
wilcox.test
function. It is used internally by the
MultiWilcoxonTest
class to perform row-by-row Wilcoxon
tests.
Returns an integer, the rank-sum of the subset of the
data
for which the selector
is true.
Kevin R. Coombes krc@silicovore.com
dd <- rnorm(100) cc <- rep(c(TRUE, FALSE), each=50) rankSum(dd, cc)