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| Criterion |  Operations DMAIC |  Operations Root Cause Tree Analysis |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|
Purposedifferent | 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 problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. | 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. |
Complexitydifferent | High | Medium | High |
Timedifferent | 2-12 Wochen | 1-3 h | 2-6 h |
Participantsdifferent | 3-10 | 2-8 | 3-10 |
Formatdifferent | Workshop + async | Workshop | Workshop |
Outputdifferent | Project Charter, Measurement Plan, Cause Analysis, Control Plan | Cause Tree, Evidence Notes, Countermeasures | FMEA Table, Risk Priority, Mitigation Actions |
Tags1 shared | Continuous improvementQualityProcess improvement | Root causeTreeIncidentQuality | RiskQualityOperationsRoot cause |
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