A chi-square test of independence is applied to a contingency table with four rows and five columns for two qualitative variables. What are the degrees of freedom for this test?
A) 20
B) 16
C) 15
D) 12

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The Answer of A chi-square test of independence is applied to a contingency table with four rows and five columns for two qualitative variables. What are the degrees of freedom for this test?
A) 20
B) 16
C) 15
D) 12

A Chi-Square Test of Independence Is Applied to a Contingency