MKmisc (version 1.6)

cvCI: Confidence Intervals for Coefficient of Variation

Description

This function can be used to compute confidence intervals for the (classical) coefficient of variation.

Usage

cvCI(x, conf.level = 0.95, method = "miller", na.rm = FALSE)

Arguments

x

numeric vector.

conf.level

confidence level

method

character string specifing which method to use; see details.

na.rm

logical. Should missing values be removed?

Value

A list with class "confint" containing the following components:

estimate

the estimated coefficient of variation.

conf.int

a confidence interval for the coefficient of variation.

Details

For details about the confidence intervals we refer to Gulhar et al (2012) and Arachchige et al (2019).

References

C.N.P.G. Arachchige, L.A. Prendergast and R.G. Staudte (2019). Robust analogues to the Coefficient of Variation. https://arxiv.org/abs/1907.01110.

M. Gulhar, G. Kibria, A. Albatineh, N.U. Ahmed (2012). A comparison of some confidence intervals for estimating the population coefficient of variation: a simulation study. Sort, 36(1), 45-69.

See Also

CV

Examples

# NOT RUN {
x <- rnorm(100, mean = 10, sd = 2) # CV = 0.2
cvCI(x, method = "miller")
cvCI(x, method = "sharma")
cvCI(x, method = "curto")
cvCI(x, method = "mckay")
cvCI(x, method = "vangel")
cvCI(x, method = "panichkitkosolkul")
cvCI(x, method = "medmiller")
cvCI(x, method = "medmckay")
cvCI(x, method = "medvangel")
cvCI(x, method = "medcurto")
cvCI(x, method = "gulhar")
# }