Statistical Moment
Computes the (optionally centered and/or absolute) sample moment of a certain order.
moment(x, order=1, center=FALSE, absolute=FALSE, na.rm=FALSE)
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 whether centered moments are to be computed. |
absolute |
a logical value indicating whether absolute moments are to be computed. |
na.rm |
a logical value indicating whether |
When center and absolute are both FALSE, the
moment is simply sum(x ^ order) / length(x).
Kurt Hornik and Friedrich Leisch
x <- rnorm(100) ## Compute the mean moment(x) ## Compute the 2nd centered moment (!= var) moment(x, order=2, center=TRUE) ## Compute the 3rd absolute centered moment moment(x, order=3, center=TRUE, absolute=TRUE)
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