A set of n=20 pairs of scores (X and Y values) has SSx = 25, SSy = 16, and SP=12.5. If the mean for the X values is M=6 and the mean for the Y values is M=4.
a. Calculate the Pearson correlation for the scores. Use: Sp/SQRT(SSx )*SQRT(SSy )
b. Find the regression equation for predicting Y from the X values. Use: Sp/SSx to obtain the slope b. Then use a = My - b*Mx.