| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| internal validity relates to | 1.94 | 0.9 | 6745 | 27 | 28 |
| internal | 0.26 | 0.9 | 2613 | 6 | 8 |
| validity | 0.31 | 0.4 | 6279 | 1 | 8 |
| relates | 0.91 | 0.9 | 9485 | 75 | 7 |
| to | 0.85 | 0.9 | 8995 | 51 | 2 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| internal validity relates to | 0.88 | 0.2 | 1716 | 11 |
