Individual skill
spc-control-charts
Statistical Process Control (SPC) — select the correct control chart, interpret out-of-control signals using Western Electric rules, calculate and interpret Cp, Cpk, Pp, Ppk. Use when setting up SPC for a new characteristic, interpreting control chart signals, responding to special cause variation, or auditing SPC implementation. Covers AIAG SPC 2nd edition and IATF 16949 §8.3.3.
plugins/RBraga01/Quality-Engineering-Skills/skills/measurement/spc-control-charts/SKILL.md
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SKILL.mdcore · 10,076 bytesreferences/chart-selection-guide.mddoc · 17,014 bytes
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# Statistical Process Control (SPC)
## When to use
Use this skill when:
- Selecting the correct control chart type for a process characteristic
- Interpreting control chart signals — is this special cause or common cause?
- Calculating Cp, Cpk, Pp, Ppk and determining if the process is capable
- Responding to an out-of-control signal on a production line
- Setting up SPC for a new special characteristic (PPAP/APQP requirement)
- Auditing an SPC system for correctness and adequacy
- Explaining SPC results to a customer or during an audit
## Prerequisites