1. For the following data, compute the least squares regression line for predicting gpa given SAT.
|
SAT:
|
500
|
530
|
590
|
660
|
610
|
700
|
570
|
640
|
|
gpa:
|
2.3
|
3.1
|
2.6
|
3.0
|
2.4
|
3.3
|
2.6
|
3.5
|
2. Compute the residuals for the data used in the previous problem and verify that they sum to zero.