A set of X and Y scores has M_X = 4,SS_X = 10,M_Y = 5,SS_Y = 40,and SP = 20.What is the regression equation for predicting Y from X?

Question

Quizplus · Accepted Answer

Using the formula for the slope of the regression line, b = SP/SS_X, we find: b = 20/10 = 2 Using the formula for the intercept of the regression line, a = M_Y - b(M_X), we find: a = 5 - 2(4) = -3 Therefore, the regression equation for predicting Y from X is: Y = -3 + 2X. The correct choice is D.

A Set of X and Y Scores Has MX =

A Set of X and Y Scores Has M_X =