Suppose that a sample of n = 12 pairs of X and Y scores has SS_Y= 90 and a Pearsoncorrelation of r = +0.40.

Does the regression equation predict a significant portion of the variance?Testwith = .05.

a)What is the F-ratio?F =

b)Is the regression equation significant (Yes or No)?

For the previous question, what proportion of the variance for the Y scores is predicted by the regressionequation?

1.r²=__________

2.________of the variance.