Generic functions for computing moments (variance, skewness, excess kurtosis) from probability distributions.

## Arguments

- x
An object. The package provides methods for distribution objects such as those from

`Normal()`

or`Binomial()`

etc.- ...
Arguments passed to methods. Unevaluated arguments will generate a warning to catch mispellings or other possible errors.

## Details

The functions `variance`

, `skewness`

, and `kurtosis`

are new
generic functions for computing moments of probability distributions such as
those provided in this package. Additionally, the probability distributions
from distributions3 all have methods for the `mean`

generic. Moreover, quantiles can be computed with methods for
`quantile`

. For examples illustrating the usage with
probability distribution objects, see the manual pages of the respective
distributions, e.g., `Normal`

or `Binomial`

etc.