| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| control variable in research | 0.89 | 0.6 | 5903 | 16 | 28 |
| control | 1.44 | 0.5 | 9468 | 22 | 7 |
| variable | 0.1 | 1 | 4782 | 35 | 8 |
| in | 1.16 | 0.6 | 1258 | 1 | 2 |
| research | 1.66 | 0.9 | 2020 | 78 | 8 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| control variable in research | 0.04 | 0.7 | 6342 | 13 |
