The R Project SVN R

\name{mean}
\title{Arithmetic Mean}
\usage{
mean(x, trim=0, na.rm=FALSE)
}
\alias{mean}
\alias{mean.default}
\arguments{
\item{x}{a numeric vector containing the values
whose mean is to be computed.}
\item{trim}{the fraction (0 to 0.5) of observations to be
trimmed from each end of \code{x} before the mean is computed.}
\item{na.rm}{a logical value indicating whether \code{NA}
values should be stripped before the computation proceeds.}
}
\description{
Generic function for the (trimmed) arithmetic mean.
If \code{trim} is zero (the default),
the arithmetic mean of the values in \code{x} is computed.
If \code{trim} is non-zero, a symmetrically trimmed mean is computed
with a fraction of \code{trim} observations deleted from each end
before the mean is computed.

Missing values are ignored.
}
\seealso{
\code{\link{weighted.mean}}
}
\examples{
x <- c(0:10, 50)
xm <- mean(x)
c(xm, mean(x, trim = .10))
}
\keyword{univar}