Critical values for Cochran outlying variance test

Description:

This functions calculates quantiles (critical values)
for Cochran test for outlying variance.

Usage:

[res] = cochraninv(p,n,k)

Arguments:

p: vector of probabilities.

n: number of values in each group (if not equal, use arithmetic
mean).

k: number of groups.

Value:

Vector of critical values.

Author(s):

Lukasz Komsta, ported from R package "outliers".
See R News, 6(2):10-13, May 2006

References:

Snedecor, G.W., Cochran, W.G. (1980). Statistical Methods (seventh
edition). Iowa State University Press, Ames, Iowa.