Question: If the sample covariance between two variables is 25, the correlation coefficient is 0.50, and the standard deviation of one of the variables is 10,

If the sample covariance between two variables is 25, the correlation coefficient is 0.50, and the standard deviation of one of the variables is 10, then the variance of the other variables is approximately ...

a. impossible to determine with any level of accuracy

b. 5

c. 2.2

d. 25

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