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| Criterion |  Operations DMAIC |  Operations Standard Work Analysis |  Operations 8D Problem Solving |  Operations A3 Problem Solving |
|---|---|---|---|---|
Purposedifferent | For a process problem with fluctuating performance, the method brings analysis and improvement into a disciplined sequence. It creates a framework in which numbers, causes, and control come together. | When the same task is done differently depending on the person, the method exposes the reliable core. It creates comparability without unnecessarily choking off needed latitude. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. |
Complexitydifferent | High | Medium | High | Medium |
Timedifferent | 2-12 Wochen | 1-3 h | 1-6 Wochen | 45-90 min |
Participantsdifferent | 3-10 | 2-6 | 4-10 | 2-5 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Project Charter, Measurement Plan, Cause Analysis, Control Plan | Standard Work Sheet, Deviation List, Improved Standard, Training Needs | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | Continuous improvementQualityProcess improvement | LeanProcessQuality | QualityProblem solvingRoot cause | LeanProblem solvingCoachingOperations |