Mean | R Documentation |
Generic function for the (trimmed) arithmetic mean, possibly with given weights.
Mean(x, ...)
## S3 method for class 'Freq'
Mean(x, breaks, ...)
## Default S3 method:
Mean(x, weights = NULL, trim = 0, na.rm = FALSE, ...)
x |
An object. Currently there are methods for numeric/logical vectors
and date, date-time and time interval objects.
Complex vectors are allowed for |
... |
further arguments passed to or from other methods. |
breaks |
breaks for calculating the mean for classified data as
composed by |
weights |
a numerical vector of weights the same length as |
trim |
the fraction (0 to 0.5) of observations to be trimmed from each
end of |
na.rm |
a logical value indicating whether |
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.
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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