mean.rv {rv} | R Documentation |
mean.rv
computes the distribution of the arithmetic average of its
argument rv
object.
## S3 method for class 'rv': mean(x, ...)
x |
an object |
... |
further arguments passed to or from other methods |
mean.rv
gives the distribution (that is, a random variable object)
of the statistic sum x_i/n
(sum(x)/length(x)).
In particular, mean(x)
of a random vector x
of length one
is equal to x
as it would be in the case of numerical x.
To find the expectation of a random vector x
(that is, the individual means of random components in a vector),
use rvmean(x)
(same as E(x)
and Pr(x)
.
Jouni Kerman kerman@stat.columbia.edu http://www.stat.columbia.edu/~kerman
Kerman, Jouni and Gelman, Andrew. Manipulating and Summarizing Posterior Simulations Using Random Variable Objects. Technical report, Columbia University, New York.
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