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| Criterion |  Operations A3 Problem Solving |  Decision Making Delphi Method |  Operations Failure Mode and Effects Analysis |  Operations Fishbone Diagram |
|---|---|---|---|---|
Purposedifferent | 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 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 process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. |
Complexitydifferent | Medium | High | High | Low |
Timedifferent | 45-90 min | 1-4 Wochen | 2-6 h | 30-60 min |
Participantsdifferent | 2-5 | 6-30 Experten | 3-10 | 2-8 |
Formatdifferent | Workshop + async | Async | Workshop | Workshop |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Expert Forecast, Consensus Range, Assumption Notes | FMEA Table, Risk Priority, Mitigation Actions | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | LeanProblem solvingCoachingOperations | ForecastingExpertsDecisionStrategy | RiskQualityOperationsRoot cause | Root causeQualityOperations |