Fisher’s Exact Test (FET), proposed 90 years ago by the famous pioneering statistician Ronald A. Fisher, is one of the most useful and long-lasting statistical methods for finding the exact permutation significance levels of contingency tables. In particular, for testing whether two classification criteria in 2×2 contingency tables are independent in the situation of small cell frequencies, the much more rapid normal approximation and chi-square calculation are liable to be inaccurate; therefore, the FET can be used instead. In this article, we introduce the FET to the broad audience of researchers/teachers/students in theoretical linguistics by applying the FET to a set of categorical data obtained from research on the mathematical interpretation of plural markers such as the English /-s/ suffix in the world’s languages. We hope the contents of this article can be of meaningful use for the broad audience of readers mentioned above.
Journal of Probability and Statistical Science, Vol.14, No.1, pp.75-80