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| Criterion |  Decision Making Delphi Method |  Decision Making PERT Estimation |  Operations 5 Whys |
|---|---|---|---|
Purposedifferent | 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. | On complex initiatives, a plain average tends to understate just how uncertain the outcome really is. It separates options, evaluation criteria, and open risks. The result is captured as a PERT Estimate, Expected Value, and Risk 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 | Medium | Low |
Timedifferent | 1-4 Wochen | 15-45 min | 15-30 min |
Participantsdifferent | 6-30 Experten | 1-8 | 2-6 |
Formatdifferent | Async | Workshop + async | Workshop |
Outputdifferent | Expert Forecast, Consensus Range, Assumption Notes | PERT Estimate, Expected Value, Risk Notes | Root cause notes, Countermeasures |
Tagsno overlap | ForecastingExpertsDecisionStrategy | EstimationUncertaintyRisk | Root causeIncidentLeanProblem solving |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
