Table
2.3.6
.
Computing best fit line and correlation coefficient by hand
\(x_k^2\)
\(x_k\)
\(y_k\)
\(y_k^2\)
\(x_k \cdot y_k\)
4
-2
3
9
-6
0
0
1
1
0
0
0
-1
1
0
1
1
1
1
1
9
3
1
1
3
9
3
-1
1
-3
16
4
0
0
0
39
9
4
14
7
in-context