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Question 1 Let x, y and z be three observations. The mean of these observations is (a) x×y×z3 (b) x+y+z3 (c) x−y−z3 (d) x×y+z3

Answer» Question 1
Let x, y and z be three observations. The mean of these observations is
(a) x×y×z3
(b) x+y+z3
(c) xyz3
(d) x×y+z3


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