Linearization of standard deviations
Control the reliability of your measurement and test results: repeatability and reproducibility of analysis methods
Practical sheet REF: FIC0587 V1
Linearization of standard deviations
Control the reliability of your measurement and test results: repeatability and reproducibility of analysis methods

Author : Jean-Michel POU

Publication date: June 10, 2015, Review date: November 27, 2016 | Lire en français

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4. Linearization of standard deviations

Dispersions are often influenced by the "quantity" measured. For example, it's easier to measure a 10 mm mechanical part than a 2,000 mm one. The standard deviations of repeatability and reproducibility (inter-something or overall) can therefore differ according to the quantity measured.

To confirm or refute this hypothesis, it is possible to carry out tests by varying the quantity measured. We're talking about different levels here.

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