var_K {FKSUM}

Variance of a kernel

Description

Computes the variance of the random variable whose density is given by a kernel implemented in FKSUM, with coefficients beta. NB: coefficients will first be normalised so that the kernel is a density function.

Usage

var_K(beta)

Arguments

beta

positive numeric vector of kernel coefficients.

Value

A positive numeric value representing the variance of the random variable with density given by the kernel.