Shewhart control chart

https://doi.org/10.1351/goldbook.08125
Control chart with Shewhart control limits intended primarily to distinguish between the variation in the plotted measure due to random causes and that due to special causes.
Source:
PAC, 2021, 93, 997. 'Metrological and quality concepts in analytical chemistry (IUPAC Recommendations 2021)' on page 1040 (https://doi.org/10.1515/pac-2019-0819)