ECE302 Quiz-09

What is the formula for the covariance of two random variables X and Y?

• Cov(X, Y) = E[XY] + E[X]E[Y]

• Cov(X, Y) = E[(X − Y)²]

• Cov(X, Y) = E[X²] − E[Y²]

• Cov(X, Y) = E[XY] − E[X]E[Y]

What is the correlation coefficient between two random variables X and Y?

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CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

If two random variables X and Y are independent, what can be said about their covariance?

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CCSS.HSS.CP.A.2

What is the formula for the conditional probability mass function (PMF) of X given Y=y?

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CCSS.HSS.CP.B.6

What is the formula for the conditional probability density function (PDF) of X given Y=y?

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CCSS.HSS.CP.A.3

CCSS.HSS.CP.A.4

CCSS.HSS.CP.B.6

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CCSS.HSS.CP.A.3

CCSS.HSS.CP.B.6