Method evidence record

Control chart

A control chart is a time-series graph with statistically derived upper and lower control limits that separates the natural, random variation of a process (common cause) from unusual, assignable variation (special cause). Invented by Walter Shewhart at Bell Labs in 1924, control charts remain the foundational tool of Statistical Process Control and are used across manufacturing, healthcare, software, and service industries to monitor whether a process remains stable and predictable over time.

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Statistical Control Chart (Shewhart Chart)

Taxonomic method record · process-pipeline / experimental-design

Shewhart, W. A. (1931). Economic Control of Quality of Manufactured Product. Van Nostrand. · URL
Montgomery, D. C. (2009). Introduction to Statistical Quality Control (6th ed.). Wiley. · ISBN 978-0470169926

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Related methods

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Taxonomic bucketDesign of experimentsmachine-suggested · Relational suggestion, not evidence.Taxonomic bucketFailure Mode and Effects Analysismachine-suggested · Relational suggestion, not evidence.Same method familyProcess Capability Analysismachine-suggested · Relational suggestion, not evidence.Taxonomic bucketQuality Function Deploymentmachine-suggested · Relational suggestion, not evidence.Same method familySix Sigma DMAICmachine-suggested · Relational suggestion, not evidence.Taxonomic bucketStatistical Process Controlmachine-suggested · Relational suggestion, not evidence.