Coefficient-of-variation diagram

Draws the coefficient-of-variation diagnostic diagram on the original scale (CV \(\gamma_2\) versus skewness \(\gamma_3\)) with theoretical loci, bootstrap cloud, and 95% concentration ellipse.

Usage

cv_diagram(
  data,
  data_name = "Dataset",
  B = NULL,
  seed = 42,
  level = 0.95,
  xlim = c(0, 2.2),
  ylim = c(-0.2, 5)
)

Arguments

data

Numeric vector of positive observations.

data_name

Character; label used in the title.

B

Integer; bootstrap replicates (default chosen adaptively from n).

seed

Integer random seed.

level

Numeric; ellipse confidence level (default 0.95).

xlim, ylim

Numeric length-2 axis limits.

Value

A ggplot object.

Examples

data(reliability_datasets)
cv_diagram(reliability_datasets$Yarn, "Yarn", B = 200)