Question: For I J contingency tables, explain why the variables are independent when the (I 1) (J 1) differences j|i

For I × J contingency tables, explain why the variables are independent when the (I – 1) (J – 1) differences π_j|i – π_j|1 = 0, i = 1,......., I – 1, j = 1,........., J – 1.

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