i | xi | yi |
| ryi | ryi0 | ryi1 |
9 | 1 | 6 | 10 | 9.5 |
| 9.5 |
10 | 1 | 6 | 9 | 9.5 |
| 9.5 |
8 | 1 | 5 | 8 | 8 |
| 8 |
6 | 0 | 4 | 7 | 6.5 | 6.5 |
|
7 | 1 | 4 | 6 | 6.5 |
| 6.5 |
4 | 1 | 3 | 5 | 4.5 |
| 4.5 |
5 | 1 | 3 | 4 | 4.5 |
| 4.5 |
2 | 0 | 2 | 2 | 2.5 | 2.5 |
|
3 | 0 | 2 | 3 | 2.5 | 2.5 |
|
1 | 0 | 1 | 1 | 1 | 1 |
|
nj |
|
|
|
| 4 | 5 |
SRj = ∑i |
|
|
|
| 12.5 | 42.5 |
SRj/nj |
|
|
|
| 3.125 | 7.083 |