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| Criterion |  Operations Fishbone Diagram |  Operations DMAIC |  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. | For a process problem with fluctuating performance, the method brings analysis and improvement into a disciplined sequence. It creates a framework in which numbers, causes, and control come together. | 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 | High |
Timedifferent | 30-60 min | 2-12 Wochen | 2-8 h |
Participantsdifferent | 2-8 | 3-10 | 2-8 |
Formatdifferent | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Fishbone Diagram, Cause Categories, Investigation Backlog | Project Charter, Measurement Plan, Cause Analysis, Control Plan | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | Root causeQualityOperations | Continuous improvementQualityProcess improvement | Problem solvingRoot causeDecisionOperations |
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