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Please help with homework problem. A least squares line is given by My = 3 + (-2)*x. You are told that the sample variance of

Please help with homework problem.

A least squares line is given by My = 3 + (-2)*x. You are told that the sample variance of x is 25 and sample variance of y is 144. What is the value of the correlation coefficient r? Or= 1 Or=0.83 r=-0.83 Or=0.5

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