ModLSD_Var {trawl}

Computes the variance of the modified logarithmic series distribution

Description

Computes the variance of the modified logarithmic series distribution

Usage

ModLSD_Var(delta, p)

Arguments

delta

parameter \delta of the modified logarithmic series distribution

p

parameter of the modified logarithmic series distribution

Details

A random variable X has modified logarithmic series distribution with parameters 0\le \delta <1 and 0<p<1 if P(X=0)=(1-\delta) and

P(X=x)=(1-\delta)(-1)/(\log(1-p))p^x/x, \mbox{ for } x=1,2,\dots.

Value

Mean of the modified logarithmic series distribution