Generic function for the (trimmed) arithmetic mean, possibly with given weights.
Mean(x, ...)# S3 method for Freq
Mean(x, breaks, ...)
# S3 method for default
Mean(x, weights = NULL, trim = 0, na.rm = FALSE, ...)
If trim is zero (the default), the arithmetic mean of the
values in x is computed, as a numeric or complex vector of length
one. If x is not logical (coerced to numeric), numeric (including
integer) or complex, NA_real_ is returned, with a warning.
If trim is non-zero, a symmetrically trimmed mean is computed with a
fraction of trim observations deleted from each end before the mean
is computed.
trim and weights can't be used together at the same time.
An object. Currently there are methods for numeric/logical vectors
and date, date-time and time interval objects.
Complex vectors are allowed for trim = 0, only.
further arguments passed to or from other methods.
breaks for calculating the mean for classified data as
composed by Freq.
a numerical vector of weights the same length as x
giving the weights to use for elements of x.
the fraction (0 to 0.5) of observations to be trimmed from each
end of x before the mean is computed. Values of trim outside that
range are taken as the nearest endpoint.
a logical value indicating whether NA values should be
stripped before the computation proceeds.
Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) The New S Language. Wadsworth & Brooks/Cole.
weighted.mean, mean.POSIXct,
colMeans for row and column means.
x <- c(0:10, 50)
xm <- Mean(x)
c(xm, Mean(x, trim = 0.10))
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