Shewhart control limit 

https://doi.org/10.1351/goldbook.08126
Control limit determined statistically from the variation of the process due to random causes alone.
Source:
PAC, 2021, 93, 997. (Metrological and quality concepts in analytical chemistry (IUPAC Recommendations 2021)) on page 1040 [Terms] [Paper]
Citation: 'Shewhart control limit' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.08126 RIS BibTex EndNote
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