cv: coefficient of variance

In drmjc/mjcstats: MJC's general statistics library

Description

The coefficient of variation (CV) is defined as the ratio of the standard deviation to the mean. As such, it is a measure of dispersion of a probability distribution. It can only be computed on for data on a ratio scale (ie all positive).

Usage

  cv(x, as.percent = FALSE, na.rm = TRUE)

Arguments

x	a numeric vector of positive values
as.percent	logical: return result as a percentage?
na.rm	logical: remove NA's ?

Value

a numeric(1)

Author(s)

Mark Cowley, 2012-07-09

References

http://en.wikipedia.org/wiki/Coefficient_of_variation

Examples

val <- runif(25)
cv(val)
cv(val, as.percent=TRUE)
cv(c(val, NA), na.rm=FALSE)

drmjc/mjcstats documentation built on May 15, 2019, 2:41 p.m.