The formula for β₁ is just: A) Covariance of x and y over variance of y B) Covariance of x and y over variance of x C) Covariance of x and y over the standard deviation of x D) Covariance of x and y over the standard deviation of y E) None of the above is correct

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A: Helpful formulas (i)VaX=a2VX(ii)VC=0,where c is the constant(iii)VaX+ bY=a2VX+ b2VY

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