## File: moment.Rd

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 123456789101112131415161718192021222324252627282930313233343536373839404142 \name{moment} \alias{moment} \title{Statistical Moment} \description{ Computes the (optionally centered and/or absolute) sample moment of a certain order. } \usage{ moment(x, order=1, center=FALSE, absolute=FALSE, na.rm=FALSE) } \arguments{ \item{x}{a numeric vector containing the values whose moment is to be computed.} \item{order}{order of the moment to be computed, the default is to compute the first moment, i.e., the mean.} \item{center}{a logical value indicating whether centered moments are to be computed.} \item{absolute}{a logical value indicating whether absolute moments are to be computed.} \item{na.rm}{a logical value indicating whether \code{NA} values should be stripped before the computation proceeds.} } \details{ When \code{center} and \code{absolute} are both \code{FALSE}, the moment is simply \code{sum(x ^ order) / length(x)}. } \author{Kurt Hornik and Friedrich Leisch} \seealso{ \code{\link{mean}}, \code{\link{var}}} \examples{ 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) } \keyword{univar}