e1071 (version 1.1-0)

moment: Statistical Moment

Description

Computes the (optionally centered and/or absolute) moment of order order. When center and absolute are both FALSE, the moment is simply sum(x ^ order) / length(x).

Usage

moment(x, order=1, center=FALSE, absolute=FALSE, na.rm=FALSE)

Arguments

x

a numeric vector containing the values whose moment is to be computed.

order

order of the moment to be computed, the default is to compute the first moment, i.e., the mean.

center

a logical value indicating wether centered moments are to be computed.

absolute

a logical value indicating wether absolute moments are to be computed.

na.rm

a logical value indicating whether NA values should be stripped before the computation proceeds.

See Also

mean, var

Examples

x <- rnorm(100)

# Compute mean and variance
moment(x)
moment(x, order=2, center=TRUE)

# Compute the 3rd absolute centered moment
moment(x, order=3, center=TRUE, absolute=TRUE)