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| Criterion |  Operations Fishbone Diagram |  Growth Funnel Analysis |  Operations 8D Problem Solving |  Operations Kepner-Tregoe |
|---|---|---|---|---|
Purposedifferent | 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. | When many visitors or users drop off along the way, the reason behind the number often stays hidden. Funnel Analysis exposes these transitions and makes visible exactly where the path collapses. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | 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 | Medium | High | High |
Timedifferent | 30-60 min | 1-3 h | 1-6 Wochen | 2-8 h |
Participantsdifferent | 2-8 | 1-5 | 4-10 | 2-8 |
Formatdifferent | Workshop | Async | Workshop + async | Workshop + async |
Outputdifferent | Fishbone Diagram, Cause Categories, Investigation Backlog | Funnel report, Drop-off analysis, Optimization hypotheses | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | Root causeQualityOperations | AnalyticsConversionGrowth | QualityProblem solvingRoot cause | Problem solvingRoot causeDecisionOperations |