| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| when was homework invented | 0.06 | 0.8 | 5925 | 4 | 26 |
| when | 1.84 | 0.4 | 7263 | 68 | 4 |
| was | 1.2 | 0.1 | 388 | 6 | 3 |
| homework | 0.07 | 0.4 | 4452 | 34 | 8 |
| invented | 1.46 | 0.1 | 7258 | 72 | 8 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| when was homework invented | 1.67 | 0.1 | 1446 | 82 |
