Direct answer
A score can summarize chosen checks, but without validated weights, transparent methods and outcome evidence it cannot diagnose cause or predict search performance.
Practical steps
- Expose raw components.
- State sampling and thresholds.
- Test correlation and confounding.
- Use the score only for its validated decision.
Common mistakes
- Averaging unrelated tools.
- Treating correlation as rank factor proof.
- Hiding missing data through imputation.
Limitations
- The studies used 2019 tools and samples.
- Their results do not reveal Google weights.
Primary sources
- Search Engine Optimization — MDPI; 2021-02; 2026-08-14.