mean.rv: Distribution of the Arithmetic Mean of a Random Vector
Description
mean.rv computes the distribution of the arithmetic average of its
argument rv object.
Usage
# S3 method for rv
mean(x, ...)
Arguments
x
an object
…
further arguments passed to or from other methods
Details
mean gives the distribution (that is, a random variable object) of
the statistic \(\frac{1}{n}\sum_{i=1}^n x_i\)
(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)).
References
Kerman, J. and Gelman, A. (2007). Manipulating and Summarizing
Posterior Simulations Using Random Variable Objects. Statistics and
Computing 17:3, 235-244.