cvcqv (version 1.0.0)

CoefVar: R6 Coefficient of Variation (cv)

Description

The R6 class CoefVar for the coefficient of variation (cv)

Arguments

x

An R object. Currently there are methods for numeric vectors

na.rm

a logical value indicating whether NA values should be stripped before the computation proceeds.

digits

integer indicating the number of decimal places to be used.

Details

Coefficient of Variation

The cv is a measure of relative dispersion representing the degree of variability relative to the mean [1]. Since $cv$ is unitless, it is useful for comparison of variables with different units. It is also a measure of homogeneity [1].

References

[1] Albatineh, AN., Kibria, BM., Wilcox, ML., & Zogheib, B, 2014, Confidence interval estimation for the population coefficient of variation using ranked set sampling: A simulation study, Journal of Applied Statistics, 41(4), 733<U+2013>751, DOI: http://doi.org/10.1080/02664763.2013.847405

Examples

# NOT RUN {
x <- c(
    0.2, 0.5, 1.1, 1.4, 1.8, 2.3, 2.5, 2.7, 3.5, 4.4,
    4.6, 5.4, 5.4, 5.7, 5.8, 5.9, 6.0, 6.6, 7.1, 7.9
)
CoefVar$new(x)$est()
cv_x <- CoefVar$new(x, digits = 2)
cv_x$est()
cv_x$est_corr()
R6::is.R6(cv_x)
# }