A chi-square (χ2) statistic is a test that is used to measure how expectations compare to actual observed data or model ...

R is the perfect language for creating a variety of chi-square tests, which are used to perform statistical analyses of counts of data. Here's how, with some sample code. A chi-square test (also ...

A statistical test that allows one to determine whether observed quantities of a specific characteristic differed from the expected value purely by chance.

What is Fisher's exact test? Fisher’s exact test is a statistical hypothesis test used to assess the association between two binary variables in a contingency table and is particularly useful when ...

The Canadian Journal of Statistics / La Revue Canadienne de Statistique A modified chi-square test statistic is constructed for testing the hypothesis of independence in a two-way contingency table ...

There are two common methods for statistical inference on 2 × 2 contingency tables. One is the widely taught Pearson chi-square test, which uses the well-known χ2 statistic. The chi-square test is ...