Tail Probabilities for Contingency Tables with Small Expectations

Abstract

In most cases where an application of the χ 2 test for contingency tables is recommended, only the size of the expected values is taken into account and not the level of significance. In the present article, a method is proposed which is mainly suitable for those cases for which the applicability of the χ 2 test is doubtful, whereas the exact test would require too much computational work.