Interactive SPC Simulation
Configure process parameters and generate real-time control charts. Based on Shewhart's original framework (1924) and integrated into Six Sigma's DMAIC methodology (Q380179).
Process Capability
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Cp Index
Sigma Level
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Short-term estimate
Defects Rate
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DPMO (est.)
Rule Violations
0
Western Electric Rules
Interpretation Guide
- Points beyond UCL/LCL indicate special cause variation
- Seven consecutive points on one side of centerline suggests mean shift
- Trend of six increasing/decreasing points indicates systematic drift
- Two of three points beyond 2σ warns of approaching instability
Methodology: DMAIC (Q380179) via Six Sigma framework | Original control chart theory: Walter A. Shewhart, Economic Control of Quality of Manufactured Product (1931)