| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| extraneous variables confounds | 1.22 | 0.9 | 6767 | 49 | 30 |
| extraneous | 1.01 | 0.4 | 9010 | 15 | 10 |
| variables | 1.51 | 0.9 | 560 | 12 | 9 |
| confounds | 1.42 | 0.4 | 4516 | 97 | 9 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| extraneous variables confounds | 0.8 | 1 | 286 | 33 |
