In a two-way factorial ANOVA,the formula for calculating df_A×Bis A)n - 1. B)n - AB. C)(A - 1)(B - 1). D)(AB - 1)(N - 1).

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The formula for calculating df_A×B in a two-way factorial ANOVA is (A - 1)(B - 1). This is because the degrees of freedom for the interaction between two factors A and B with k and j levels, respectively, is (k-1)(j-1). The degrees of freedom for the error term (within-group variance) is equal to (N-kj), where N is the total sample size. Therefore, the degrees of freedom for _A×B is equal to the product of the degrees of freedom for the interaction and the error term, which is (k-1)(j-1) x (N-kj).

In a Two-Way Factorial ANOVA,the Formula for Calculating DfA×B is

In a Two-Way Factorial ANOVA,the Formula for Calculating Df_A×Bis