Chi-Square (χ2) Statistic: What It Is, Examples, How and When to Use the Test

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

chi square test / goodness of fit; chi-square; .2; chi square

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

A Modified Chi-Square Test of Independence against a Class of Ordered Alternatives in an r × c Contingency Table

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 ...
Simon Fraser University

Chi-Square Tests

The chi-square test is a statistical hypothesis test that is used to compare observed and expected counts in a contingency table. Its uses include: tests for independence, tests for homogeneity, and ...
JSTOR Daily

Do the Chi-Square Test and Fisher's Exact Test Agree in Determining Extreme for 2 × 2 Tables?

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 ...