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| Criterion |  Operations DMAIC |  Operations 8D Problem Solving |  Decision Making Delphi Method |
|---|---|---|---|
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. | 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. | When knowledge is distributed and direct dominance should be avoided, groups quickly fall under the sway of their opinion leaders. The Delphi Method gathers assessments iteratively and gradually brings expert judgments closer together. |
Complexitysame | High | High | High |
Timedifferent | 2-12 Wochen | 1-6 Wochen | 1-4 Wochen |
Participantsdifferent | 3-10 | 4-10 | 6-30 Experten |
Formatdifferent | Workshop + async | Workshop + async | Async |
Outputdifferent | Project Charter, Measurement Plan, Cause Analysis, Control Plan | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Expert Forecast, Consensus Range, Assumption Notes |
Tagsno overlap | Continuous improvementQualityProcess improvement | QualityProblem solvingRoot cause | ForecastingExpertsDecisionStrategy |
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