Probability Flashcards by Dan Lee | Brainscape

Q

What is the formula for variance of a discrete or continuous random variable?

A

Var(X) = E(X²) - [E(X)]²

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Q

What is the formula for the expectation (or mean) of a discrete random variable?

A

E(X) = Σx•f(x)

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Q

What is the formula for expectation for

A

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