Definition
A statistically derived upper or lower boundary on a control chart that indicates the range of process variation expected while the process remains in statistical control.
Application
Used to flag statistically unusual process behavior and trigger investigation or corrective action. Control limits describe process stability and are not the same as engineering or customer specification limits.
Related search terms
Statistical control limit
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Related concepts
Evidence and further reading
- Evidence from itl.nist.govhttps://www.itl.nist.gov/div898/handbook/pmc/section3/pmc31.htm
- Evidence from itl.nist.govhttps://www.itl.nist.gov/div898/handbook/pmc/section3/pmc32.htm