| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| sample size calculation formula for rct | 1.2 | 0.8 | 263 | 40 | 39 |
| sample | 0.27 | 0.4 | 9103 | 28 | 6 |
| size | 1.22 | 0.8 | 1953 | 23 | 4 |
| calculation | 1.9 | 1 | 6819 | 47 | 11 |
| formula | 0.14 | 1 | 5179 | 88 | 7 |
| for | 0.64 | 0.7 | 5104 | 57 | 3 |
| rct | 1.84 | 0.2 | 2281 | 17 | 3 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| sample size calculation formula for rct | 0.36 | 1 | 9622 | 5 |
