A comparison of approximations to percentiles of the noncentral chi2-distribution

Abstract

Various approximations to percentiles of the noncentral 2-distribution are examinedfor their accuracy over a wide range of values of the parameters of the distribution.Keywords: Probability distribution, percentiles, numerical approximation.Se examinan varias aproximaciones de los percentiles de la distribuci´on 2 nocentrada, debido a su precisi´on en un amplio rango de valores de los par´ametros de ladistribuci´on.Palabras clave:: Distribuci´on de probabilidad, percentiles, aproximaci´on num´erica.