The chi-squared test, often written as χ2 test, is a statistical hypothesis test used in the analysis of categorical variables to determine whether observed data are different from expectations. In ...

One is the widely taught Pearson chi-square test, which uses the well-known χ2 statistic. The chi-square test is appropriate for large sample inference, and it is equivalent to the Z-test that uses ...

We propose a Bayesian chi-squared model diagnostic for analysis of data subject to censoring. The test statistic has the form of Pearson's chi-squared test statistic and is easy to calculate from ...