When comparing categorical variables, your data won't always have 2x2 dimensions as in the Fisher's Test Topic Note. For tables with greater dimensions we can use the Chi-square test to test ...

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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 ...

The Chi-Square test of independence examines whether or not two nominal (categorical) variables have a significant connection. Comparing the frequency of categories for one nominal variable with the ...