Hostname: page-component-89b8bd64d-sd5qd Total loading time: 0 Render date: 2026-05-12T17:36:04.389Z Has data issue: false hasContentIssue false

A Pólya Approximation to the Poisson-Binomial Law

Published online by Cambridge University Press:  04 February 2016

Max Skipper*
Affiliation:
University of Oxford and The University of Sydney
*
Postal address: School of Mathematics and Statistics, The University of Sydney, Sydney, 2006, Australia. Email address: m.skipper@maths.usyd.edu.au
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the 'Save PDF' action button.

Using Stein's method, we derive explicit upper bounds on the total variation distance between a Poisson-binomial law (the distribution of a sum of independent but not necessarily identically distributed Bernoulli random variables) and a Pólya distribution with the same support, mean, and variance; a nonuniform bound on the pointwise distance between the probability mass functions is also given. A numerical comparison of alternative distributional approximations on a somewhat representative collection of case studies is also exhibited. The evidence proves that no single one is uniformly most accurate, though it suggests that the Pólya approximation might be preferred in several parameter domains encountered in practice.

Information

Type
Research Article
Copyright
© Applied Probability Trust