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

What is the chi-squared test? The chi-squared test, often written as χ 2 test, is a statistical hypothesis test used in the analysis of categorical variables to determine whether observed data are ...

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 ...

QQ plots of the empirical distributions of the six test statistics against their asymptotic chi-square distributions. Northwest: UC; North: IND1; Northeast: IND2; Southwest: IND3; South: NZ2; ...

Recall that a chi-squared test of independence can be used for two categorical variables and write down the null hypothesis for this test Explain the basic idea of a chi-squared test, namely that the ...