The equation for r involves dividing the ________ by ________. A)COV_xy;the product of the variance of X and Y (S_x^2S_y²) B)product of the standard deviation of X and Y (S_xS_y);COV_xy C)COV_xy;the product of the standard deviation of X and Y (S_xS_y) D)product of the variances of X and Y (S_x^2S_y²);COV_xy

Question

Quizplus · Accepted Answer

The equation for r is r=COVxy/(SxSy), where COVxy is the covariance of X and Y, Sx is the standard deviation of X, and Sy is the standard deviation of Y. Therefore, to isolate r in the equation, we need to divide COVxy by (SxSy), which corresponds to choice C. The other choices involve either the product or the variance of X and Y, which does not match the equation for r.

The Equation for R Involves Dividing the ________ by ________

The Equation for R Involves Dividing the by