The Chi-squared distribution, with degrees of freedom $k$, describes the distribution of $\displaystyle \sum_{1=1}^{k} Z_k^2$ values, where $Z_k$ represents any value ...

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 ...

chisq-fisher-viz is an interactive Shiny application that allows users to perform Chi-Squared and Fisher's Exact Tests of independence on categorical data. The app visualizes the results with ...

output out=chisqdat pchi lrchi n nmiss; title 'Chi-Square Tests for 3 by 5 Table of Eye and Hair Color'; run; proc print data=chisqdat noobs; title 'Chi-Square Statistics for Eye and Hair Color'; ...

Wald's method constructs test statistics having chi-squared limiting distributions from estimators having nonsingular multivariate normal limiting distributions, using the inverse of the covariance ...