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| Criterion |  Operations 5 Whys |  Operations Scatter Diagram |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|
Purposedifferent | 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. | 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 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 | Low | Low | High |
Timedifferent | 15-30 min | 30-90 min | 2-6 h |
Participantsdifferent | 2-6 | 1-4 | 3-10 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Root cause notes, Countermeasures | Scatter Plot, Korrelationsnotiz, Hypothesenliste | FMEA Table, Risk Priority, Mitigation Actions |
Tags1 shared | Root causeIncidentLeanProblem solving | Root causeQualityVisualization | RiskQualityOperationsRoot cause |
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