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| Criterion |  Engineering Fault Isolation |  Operations Scatter Diagram |  Operations Root Cause Tree Analysis |
|---|---|---|---|
Purposedifferent | In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected. | When the question is whether two measures are related, the method makes patterns in the data picture visible. It separates felt correlations from relationships that actually show up in the data. | 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. |
Complexitydifferent | Medium | Low | Medium |
Timedifferent | 30-180 min | 30-90 min | 1-3 h |
Participantsdifferent | 1-6 | 1-4 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Scatter Plot, Korrelationsnotiz, Hypothesenliste | Cause Tree, Evidence Notes, Countermeasures |
Tagsno overlap | TroubleshootingDiagnosisEngineering | Root causeQualityVisualization | Root causeTreeIncidentQuality |
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