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| Criterion |  Operations DMAIC |  Operations Change Analysis |  Decision Making Delphi Method |  Operations 8D 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. | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | 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. | 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. |
Complexitydifferent | High | Medium | High | High |
Timedifferent | 2-12 Wochen | 45-120 min | 1-4 Wochen | 1-6 Wochen |
Participantsdifferent | 3-10 | 2-6 | 6-30 Experten | 4-10 |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop + async |
Outputdifferent | Project Charter, Measurement Plan, Cause Analysis, Control Plan | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Expert Forecast, Consensus Range, Assumption Notes | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | Continuous improvementQualityProcess improvement | ChangeRoot causeTroubleshootingComparison | ForecastingExpertsDecisionStrategy | QualityProblem solvingRoot cause |