Example 6-24. Use the relation E(AXª+BX'+CX°)² >0, X being a random variable with E(X) = 0, E denoting the mathematical expectation, to show that Hatb Hate Matb H2b Hotc 20, Hn denoting the nth moment about mean. ... Hate Ho+c Hence or otherwise show that Pearson Beta-coefficients satisfy the inequality B2 – B1 – 1 20. Also deduce that B22 1.

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