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2007 Jun 14
0
Confidence interval for coefficient of variation
...confidence interval for a coefficient of variation. The code is based on a paper by Mark Vangel in The American Statistician. I have not used the function much, but it could be useful for comparing cv's from different groups. Kevin Wright confint.cv <- function(x,alpha=.05, method="modmckay"){ # Calculate the confidence interval of the cv of the vector x # Author: Kevin Wright # See: Vangel, Mark. Confidence Intervals for a Normal Coefficient # of Variation. American Statistician, Vol 15, No1, p. 21--26. # x <- c(326,302,307,299,329) # confint.cv(x,.05,"modmc...