The Tale of Cochran's Rule: My Contingency Table has so Many Expected Values Smaller than 5, What Am I to Do?

Authors
P. M. Kroonenberg Verbeek Albert
Citation
P. M. Kroonenberg et Verbeek Albert, The Tale of Cochran's Rule: My Contingency Table has so Many Expected Values Smaller than 5, What Am I to Do?, American statistician , 72(2), 2018, pp. 175-183
Journal title
American statistician → ACNP
ISSN journal
00031305
Volume
72
Issue
2
Year of publication
2018
Pages
175 - 183
Database
ACNP
SICI code
Abstract
In an informal way, some dilemmas in connection with hypothesis testing in contingency tables are discussed. The body of the article concerns the numerical evaluation of Cochran's Rule about the minimum expected value in r . c contingency tables with fixed margins when testing independence with Pearson's X2 statistic using the .2 distribution.