The degrees of freedom associated with a chi-square test of independence where data are summarized in a contingency table with r rows and c columns equal the number of rows times the number of columns in the table; that is, rc.

Question

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The degrees of freedom associated with a chi-square test of independence where data are summarized in a contingency table with r rows and c columns equal the product of (r-1) and (c-1). So, the correct formula is (r-1) x (c-1).

The Degrees of Freedom Associated with a Chi-Square Test of Independence