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Posts tagged Western Electric Rules

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Western Electric Rules: What a Control Chart Catches Before a Point Breaches the Limit
Measurement, MSA, and SPC
SPCControl Charts

Western Electric Rules: What a Control Chart Catches Before a Point Breaches the Limit

Western Electric rules flag drift and trend patterns on a control chart before any point crosses 3-sigma. Here is what each of the 8 rules checks, which ones run by default, and what actually happens when one fires.

August 30, 202611 min read

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