4. Estimating the repeatability limit
Standard 5725-1 defines the repeatability limit as the value below which, with 95% probability, the absolute value of the difference between two test results obtained under repeatability conditions lies.
For example, for two measurement results obtained under repeatability conditions, their deviation must remain less than 2.8. S r ,for 3 to 3.3. S r . This limit is used to identify aberrant measurement results.
4.1 Validate measurement results
ISO 5725-6 proposes different scenarios for validating measurement results obtained "routinely", depending on the financial cost of testing. Two scenarios are proposed here, based on two initial tests...
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Estimating the repeatability limit
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Bibliography
ISO 5725-1: 1994 Accuracy (trueness and precision) of measurement results and methods – Part 1: General principles and definitions (in the process of being replaced at the time of writing).
ISO 5725-2: 2019 Accuracy (trueness and precision) of measurement results and methods – Part 2: Basic method for determining the repeatability and reproducibility of a standardized...
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