zipfextR (version 1.0.2)

zipfpoylogVariance: Variance of the ZipfPolylog distribution.

Description

Computes the variance of the ZipfPolylog distribution for given values of \(\alpha\) and \(\beta\).

Usage

zipfpoylogVariance(alpha, beta, tolerance = 10^(-4))

Arguments

alpha

Value of the \(\alpha\) parameter (\(\alpha > 3\)).

beta

Value of the \(\beta\) parameter (\(\beta \in (-\infty, +\infty)\)).

tolerance

Tolerance used in the calculations. (default = \(10^{-4}\))

Value

A positive real value corresponding to the variance of the distribution.

Details

The variance of the distribution only exists for \(\alpha\) strictly greater than 3.

See Also

zipfpolylogMoments, zipfpolylogMean.

Examples

# NOT RUN {
zipfpoylogVariance(0.5, 0.75)
# }