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

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

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 ...

The aim of this paper is to relate and extend some recent work on chi-square goodness-of-fit tests. There is no discussion of any problems which are specifically associated with more than one ...