The correlation between X and Y Select one or more: a. is the covariance squared b. cannot be negative since variances are always positive. c. is given by corr(X, Y) = cov(X,Y)/var(X)var(Y)cov(X,Y)/var(X)var(Y) d. can be calculated by dividing the covariance between X and Y by the product of the two standard deviations

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The correlation between X and Y

Select one or more:
a.

is the covariance squared

b.

cannot be negative since variances are always positive.

c.

is given by corr(X, Y) = cov(X,Y)/var(X)var(Y)cov(X,Y)/var(X)var(Y)

d.

can be calculated by dividing the covariance between X and Y by the product of the two standard deviations

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