| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| estimation of error variance | 0.66 | 0.2 | 6259 | 68 | 28 |
| estimation | 0.33 | 1 | 3961 | 98 | 10 |
| of | 0.97 | 0.9 | 5351 | 67 | 2 |
| error | 1.83 | 1 | 6057 | 70 | 5 |
| variance | 0.96 | 0.7 | 921 | 51 | 8 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| estimation of error variance | 0.04 | 1 | 2518 | 30 |
