Published by the Foundation for Open Access Statistics Editors-in-chief: Bettina Grün, Torsten Hothorn, Rebecca Killick, Edzer Pebesma, Achim Zeileis    ISSN 1548-7660; CODEN JSSOBK
Authors: Luke J. West, Robin K. S. Hankin
Title: Exact Tests for Two-Way Contingency Tables with Structural Zeros
Abstract: Fisher's exact test, named for Sir Ronald Aylmer Fisher, tests contingency tables for homogeneity of proportion. This paper discusses a generalization of Fisher's exact test for the case where some of the table entries are constrained to be zero. The resulting test is useful for assessing cases where the null hypothesis of conditional multinomial distribution is suspected to be false. The test is implemented in the form of a new R package, aylmer.

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Paper: Exact Tests for Two-Way Contingency Tables with Structural Zeros     Download PDF (Downloads: 7668)
aylmer_1.0-2.tar.gz: R source package Download (Downloads: 1317; 269KB) v28i11.R: R example code from the paper Download (Downloads: 1291; 1KB)

DOI: 10.18637/jss.v028.i11

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Paper: Creative Commons Attribution 3.0 Unported License
Code: GNU General Public License (at least one of version 2 or version 3) or a GPL-compatible license.