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Statistical Moment
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.
|
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)
.
Author(s)
Kurt Hornik and Friedrich LeischSee 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)