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| Criterion |  Operations Fishbone Diagram |  Operations Kepner-Tregoe |  Operations A3 Problem Solving |
|---|---|---|---|
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. | 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. | 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. |
Complexitydifferent | Low | High | Medium |
Timedifferent | 30-60 min | 2-8 h | 45-90 min |
Participantsdifferent | 2-8 | 2-8 | 2-5 |
Formatdifferent | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Fishbone Diagram, Cause Categories, Investigation Backlog | Problem Analysis, Decision Analysis, Risk Plan | A3 Report, Action Plan, Root Cause Analysis |
Tags1 shared | Root causeQualityOperations | Problem solvingRoot causeDecisionOperations | LeanProblem solvingCoachingOperations |
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