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Computes the variance of the Burr type III distribution on \(x>0\). The variance is computed numerically from moments of the density.

Usage

varburr3(c, k, s, rel.tol = 1e-10)

Arguments

c, k, s

Positive parameters.

rel.tol

Relative tolerance passed to integrate.

Value

A numeric value (may be Inf or NA if not finite / not computable).