How to find the missing frequencies using contingency table?

Question:

Find the missing frequencies when (αB) = 500; (β) = 600; (α) = 800; (B) = 1000.

Solution:

	B	​β	Total
​A	(AB) = 500	(A​β) = 300	(A) = 800
α	(αB) = 500	(α​β) = 300	(α) = 800
Total	(B) = 1000	(​β) = 600	N = 1600

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