Advanced – AI & ML Testing
F1 Score – ISTQB Definition
Last Updated: July 12, 2026 · SoftwareTestPilot QA Team
Official ISTQB Definition
The harmonic mean of precision and recall, providing a single score that balances the two.
In simple words
A single score that balances precision and recall.
Exam tip
F1 is preferred over accuracy for imbalanced datasets.
Related terms
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