| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| observation selection effect | 0.45 | 0.8 | 9826 | 21 | 28 |
| observation | 1.98 | 0.4 | 4348 | 87 | 11 |
| selection | 0.66 | 0.3 | 4770 | 42 | 9 |
| effect | 1.9 | 0.8 | 687 | 58 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| observation selection effect | 1.86 | 0.9 | 4013 | 9 |
