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| Criterion |  Operations DMAIC |  Operations Gemba Walk |  Operations 5 Whys |
|---|---|---|---|
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. | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | High | Low | Low |
Timedifferent | 2-12 Wochen | 30-120 min | 15-30 min |
Participantsdifferent | 3-10 | 2-6 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop |
Outputdifferent | Project Charter, Measurement Plan, Cause Analysis, Control Plan | Observation Notes, Improvement Ideas | Root cause notes, Countermeasures |
Tagsno overlap | Continuous improvementQualityProcess improvement | LeanObservationProcessOperations | Root causeIncidentLeanProblem solving |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
