22. For the following data:

a. Find the regression equation for predicting Y from X.

b. Use the regression equation to find a predicted Y for each X.

c. Find the difference between the actual Y value and the predicted Y value for each individual, square the differences, and add the squared values to obtain SSresidual.

d. Calculate the Pearson correlation for these data.

Use r 2 and SSY to compute SSresidual with Equation 15.18. You should obtain the same value as in part c.

X Y 1 2 4 7 3 5 2 1 5 14 3 7