How are the degrees of freedom computed for a chi-square test for independence

How are the degrees of freedom computed for a chi-square test for independence




a. df = (n1 - 1)(n2 - 1)
b. df = k - 1
c. df = N - 1
d. df = n - 1
e. df = (k1 - 1)(k2 - 1)





Answer: E


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