Coefficient of Variation — cv • boysel

Calculate the coefficient of variation (i.e. variation coefficient) for a vector.

cv(x, na.rm = FALSE)

Arguments

x	a numeric vector
na.rm	Passed directly to `sd` and `mean`.

Value

a scalar equal to \(\frac{s_{x}}{\overline{x}}\).

References

Weisstein, Eric W. "Variation Coefficient." From MathWorld--A Wolfram Web Resource. http://mathworld.wolfram.com/VariationCoefficient.html

Examples

x <- 1:5
y <- c(x^2, NA)
cv(x) > cv(y, na.rm = TRUE)
#> [1] FALSE