CV {NMcalc}

Calculate coefficient of variation of data

Description

Calculate coefficient of variation of data

Usage

CV(x, log = FALSE)

Arguments

x

The data

log

If TRUE, the geometric coefficient of variation is calculated. This is sqrt(exp(var(log(x))-1).

Details

This function is intended to be used on data. For a log-normal THETA1*EXP(ETA(1)) 'Nonmem' parameter, do CV=sqrt(exp(OMEGA[1,1])-1).

Value

A numeric

Examples

set.seed(139)
x1 <- rnorm(1000,mean=5)
CV(x1)
CV(x1,log=TRUE)
x2 <- exp(x1)
CV(x2)
CV(x2,log=TRUE)