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 |
19 |
8 |
8 |
19 |
20 |
14 |
6 |
7 |
10 |
18 |
| y |
19 |
27 |
35 |
22 |
17 |
31 |
22 |
30 |
35 |
30 |
(a) Find the equation of the line of best fit.
y? =
(b) Find se2.