Accuracy Vs Precision

Question

Repeated measurements close together but deviating from true value show:

RankGuru · Accepted Answer

1. **Precision**: Relates to the repeatability or consistency of the results. If multiple trials give values very close to each other (low standard deviation), the measurement set is **highly precise**.
2. **Accuracy**: Relates to how close the average of the measurements is to the **true or accepted value**.
3. **Scenario**: If a balance is calibrated incorrectly by $+2$g, every weighing will be consistent (precise) but will be incorrect relative to the truth (inaccurate).
4. **Conclusion**: Clustered data far from the bullseye represents **High Precision and Low Accuracy**.

Accuracy Vs Precision

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