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10) The least squares regression line for two variables x and y is given here: y = 1.34 - 0.76 x. If the coefficient of determination is r2 = 0.941, find the correlation coefficient r.
A) r = 0.970     B) r = 0.76     C) r = -0.76     D) r = -0.970     E) r = 0.624

D) r = -0.970