gmean {datana}R Documentation

Function to compute the geometric mean of a vector

Description

Computes the geometric mean of a numeric vector. It is the n-th root of the product of n numbers, as follows.

y_g = \left(\prod_{i=1}^{n} y_i\right)^{1/n}

for y_i > 0. It can also be understood as the average of the logarithmic values of a data set, converted back to a base 10 number. The geometric mean is a central position statistics of a random variable.

Usage

gmean(v)

Arguments

v

is a numeric vector

Details

Notice that can only be computed for positive values. For negative values, there are alternatives, but not covered here.

Value

This function returns the geometric mean, a numeric scalar.

Author(s)

Christian Salas-Eljatib.

Examples


y.var <- runif(10, min=10, max=45)
gmean(y.var)

[Package datana version 1.0.5 Index]