GPA		ACT
2.8		21
3.4		24
3		26
3.5		29
3.6		31
4		34
2.7		30
2.2		28
3.1		25

Estimate the equation: GPA=a+B*ACT

Using the estimates of the above equation, what are the predicted GPA levels (Y hats) for the above observations.

a. What is the total sum of squares of GPA?

b. What is the explained sum of squares for the estimates of the above equation?

c. What is the residual sum of squares for the estimates of the above equation?