Question: Suppose the linear correlation coefficient (rho) between the cortosis amount of Echani vibroswords and Echani vibroblades is 0.7. What is the variance of the cortosis

Suppose the linear correlation coefficient (rho) between the cortosis amount of Echani vibroswords and Echani vibroblades is 0.7. What is the variance of the cortosis amount of Echani vibroswords and Echani vibroblades?

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