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The correlation between X and Y A. cannot be negative since variances are always positive. B. can be calculated by dividing the covariance between X

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The correlation between X and Y A. cannot be negative since variances are always positive. B. can be calculated by dividing the covariance between X and Y by the product of the two standard deviations. C. is given by corr(x,y)=var(X)var(y)cov(x,y). D. is the covariance squared

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