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| Criterion |  Operations ABC Analysis |  Decision Making Delphi Method |  Operations 5 Whys |  Operations Kepner-Tregoe |
|---|---|---|---|---|
Purposedifferent | With many similar objects of differing economic significance, the method prioritizes effort by effect. It separates what needs regular steering from what rarely needs attention. | 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 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. | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. |
Complexitydifferent | Low | High | Low | High |
Timedifferent | 30-60 min | 1-4 Wochen | 15-30 min | 2-8 h |
Participantsdifferent | 1-5 | 6-30 Experten | 2-6 | 2-8 |
Formatdifferent | Async | Async | Workshop | Workshop + async |
Outputdifferent | ABC Classification, Focus Rules, Control List | Expert Forecast, Consensus Range, Assumption Notes | Root cause notes, Countermeasures | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | PrioritizationOperationsPortfolio | ForecastingExpertsDecisionStrategy | Root causeIncidentLeanProblem solving | Problem solvingRoot causeDecisionOperations |