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Glossary Quality Control / Term

Control Chart

A time sequenced chart with upper and lower control limits on which values of some statistical measure for a series of samples or subgroups are plotted. The chart frequently shows a central line to help detect a trend of plotted values toward either control limit.


A graph of results from sampling the product of a manufacturing process; consists of a horizontal line that represents the expected mean of some characteristic of quality and two lines on either side that represent the extent you are allowed to sample random product deviations.

Permanent link Control Chart - Modification date 2023-02-17 - Creation date 2019-12-06


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