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| Criterion |  Operations DMAIC |  Operations Failure Mode and Effects Analysis |  Operations Kaizen Event |  Operations Fishbone Diagram |
|---|---|---|---|---|
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 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. | For a tightly scoped process segment with noticeable waste, the method bundles shared energy for change. It suits situations that call for fast learning loops and visible adjustments. | 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 | High | High | Medium | Low |
Timedifferent | 2-12 Wochen | 2-6 h | 0.5-5 Tage | 30-60 min |
Participantsdifferent | 3-10 | 3-10 | 4-10 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop |
Outputdifferent | Project Charter, Measurement Plan, Cause Analysis, Control Plan | FMEA Table, Risk Priority, Mitigation Actions | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | Continuous improvementQualityProcess improvement | RiskQualityOperationsRoot cause | LeanContinuous improvementOperations | Root causeQualityOperations |