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Calibration · Glossary

What is Reproducibility?

agreement under changed conditionsCalibration

Reproducibility is the closeness of results for the same quantity when conditions change, such as operator, equipment, location or time.

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Reproducibility Explained

It is always larger than repeatability because more sources of variation are included. Gauge R&R studies separate the two.

Good procedures improve reproducibility by fixing test points, settling times and connection methods.

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Calculators for Reproducibility

CalculatorRepeatability CalculatorFree online calculator with formula and worked example.CalculatorMeasurement Uncertainty CalculatorFree online calculator with formula and worked example.

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Free downloadMeasurement Uncertainty Budget Excel SheetFree download in Excel and PDF.

Frequently Asked Questions

What is Reproducibility?

Reproducibility is the closeness of results for the same quantity when conditions change, such as operator, equipment, location or time.

Why do two technicians get different results?

Different setups, settling times, reading methods or references; a written procedure reduces this.

What is gauge R&R?

A study that measures repeatability and reproducibility of a measurement system.

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Related Terms

Calibration termRepeatabilityRepeatability is the closeness of successive readings of the same input under the same conditions, same…Calibration termPrecisionPrecision is how closely repeated measurements of the same quantity agree with each other, regardless of…Calibration termMeasurement UncertaintyMeasurement uncertainty is a quantified range around a result within which the true value is expected to…

More Calibration Terms

Calibration termHysteresisHysteresis is the difference between readings at the same input when approached from below (upscale) and…Calibration termLinearityLinearity is how closely an instrument output follows a straight line between input and output; non…Calibration termZero and Span ErrorZero and span error describe an instrument whose reading is offset at the bottom of the range (zero) or…Calibration termType A and Type B UncertaintyType A and Type B uncertainty are the two ways of evaluating uncertainty: Type A from statistics of…Calibration termCoverage FactorCoverage factor k multiplies the combined standard uncertainty to give an expanded uncertainty at a…Calibration termTest Uncertainty RatioTest uncertainty ratio compares the tolerance of the instrument under test with the uncertainty of the…

All calibration terms · Full glossary A to Z

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