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Question 1 - Link Between the Sample Covariance and Variance We have seen that the sample covariance formula is EL=(xi -x) (yi - y) Sxy

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Question 1 - Link Between the Sample Covariance and Variance We have seen that the sample covariance formula is EL=(xi -x) (yi - y) Sxy n-1 Use the definitions of the sample covariance and variance, and properties of summations to show that the sample covariance between x; and 3x; is equal to 3 times the sample variance of xi. (1 point)

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