-----Original Message----- From: boost-bounces@lists.boost.org [mailto:boost-bounces@lists.boost.org] On Behalf Of Johan Råde Sent: 05 May 2008 07:43 To: boost@lists.boost.org Subject: [boost] [Math Statistical Distributions] Hypergeometric distribution
Hi John,
Do you have any plans to add support for the hypergeometric distribution? That distribution is important for the Fisher exact test for independence in a 2x2 table.
A brief glance shows that Wikipedia lacks a formula for the cdf but http://portal.acm.org/citation.cfm?id=151271.151274 looks promising An accurate computation of the hypergeometric distribution function Full text pdf formatPdf (676 KB) Source ACM Transactions on Mathematical Software (TOMS) archive Volume 19 , Issue 1 (March 1993) table of contents Pages: 33 - 43 Year of Publication: 1993 ISSN:0098-3500 Author Trong Wu Southern Illinois Univ., Edwardsville but I don't have immediate access to the full article pdf. Suggestions? MathCAD appears to offer the density, cumulative and inverse, so this could provide some independent test values. So I might be persuaded to tackle this (rather tedious - the formulae look a bit messy) task. Paul --- Paul A Bristow Prizet Farmhouse, Kendal, Cumbria UK LA8 8AB +44 1539561830 & SMS, Mobile +44 7714 330204 & SMS pbristow@hetp.u-net.com