The computer-science aptitude score, x, and the achievement score, y (measured by a comprehensive final), were measured for 10 students in a beginning computer-science course. The results were as follows. (Give your answers correct to two decimal places.)
| x |
8 |
17 |
11 |
18 |
20 |
20 |
22 |
13 |
22 |
12 |
| y |
34 |
18 |
32 |
28 |
34 |
18 |
18 |
26 |
29 |
22
|
(a) Find the equation of the line of best fit
(b) Find se2.