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Let X be a discrete random variable. Show that E(X − d)2 = (E(X) − d)2...

Let X be a discrete random variable. Show that E(X − d)2 = (E(X) − d)2 + Var(X)

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Answer #1

From linear property of expectation

By adding and subtracting the equation by (E[x])2

Identities and formulas used:

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