Calculate r2 for the least squares line in Exercise.
The accompanying table is similar to Table. It is used to make the preliminary computations for finding the least squares line for the given pairs of x and y values.
a. Complete the table.
b. Find SSxy.
c. Find SSxx.
d. Find
e. Find
f. Find .
g. Find the least squares line.
| xi | yi | xi2 | xi yi |
| 7 | 2 | — | — |
| 4 | 4 | — | — |
| 6 | 2 | — | — |
| 2 | 5 | — | — |
| 1 | 7 | — | — |
| 1 | 6 | — | — |
| 3 | 5 | — | — |
Totals | Σxi = | Σyi = | Σxiyi = |
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