BRAINCAKEPrecision, Repeatability and Reproducibility
Precision describes how close repeated measurements of the same quantity are to each other. Precise measurements are consistent: they fluctuate only slightly about a mean value, so they show little spread. Precision is affected by random errors, not by systematic errors, so a set of readings can be precise and still be wrong.
Repeatability: a measurement is repeatable if the original experimenter repeats the investigation using the same method and the same equipment and obtains the same results.
Reproducibility: a measurement is reproducible if the investigation is repeated by another person, or by using different equipment or techniques, and the same results are obtained.
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More in Measurements and Errors
- Derived Units
- Prefixes
- Converting Units
- Random and Systematic Errors
- Resolution and Accuracy
- Absolute, Fractional and Percentage Uncertainty
- Combining Uncertainties
- Uncertainties on Graphs
All 12 lessons in Measurements and Errors · All AQA AS-level Physics topics