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| Criterion |  Operations DMAIC |  Decision Making Wideband Delphi |  Operations 5 Whys |
|---|---|---|---|
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. | A single opinion rarely holds up for planning when the future is genuinely uncertain. It separates options, evaluation criteria, and open risks. The result is captured as an Estimate Range, Assumption Log, and Expert Consensus Notes. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | High | High | Low |
Timedifferent | 2-12 Wochen | 1-4 h or multiple rounds | 15-30 min |
Participantsdifferent | 3-10 | 4-12 Experten | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Project Charter, Measurement Plan, Cause Analysis, Control Plan | Estimate Range, Assumption Log, Expert Consensus Notes | Root cause notes, Countermeasures |
Tagsno overlap | Continuous improvementQualityProcess improvement | EstimationExpertsForecasting | Root causeIncidentLeanProblem solving |
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