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| Criterion |  Decision Making Wideband Delphi |  Operations A3 Problem Solving |  Growth A/B Testing |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | 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 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. | When two variants compete, discussions quickly decide by taste rather than effect. A/B Testing checks behavior under controlled conditions and separates real improvement from chance or expectation effects. | 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 | High | Low |
Timedifferent | 1-4 h or multiple rounds | 45-90 min | 1-4 Wochen | 15-30 min |
Participantsdifferent | 4-12 Experten | 2-5 | 1-6 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Async | Workshop |
Outputdifferent | Estimate Range, Assumption Log, Expert Consensus Notes | A3 Report, Action Plan, Root Cause Analysis | Experiment results, Decision log, Learning summary | Root cause notes, Countermeasures |
Tagsno overlap | EstimationExpertsForecasting | LeanProblem solvingCoachingOperations | ExperimentsGrowthAnalyticsValidation | Root causeIncidentLeanProblem solving |