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| Criterion |  Operations 8D Problem Solving |  Operations Scatter Diagram |  Systems Thinking CATWOE Analysis |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | 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. | CATWOE structures a problem from six viewpoints and prevents too narrow a view of the situation. Different experiences of the system become comparably discussable this way. | 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 | Medium | Low |
Timedifferent | 1-6 Wochen | 30-90 min | 45-90 min | 15-30 min |
Participantsdifferent | 4-10 | 1-4 | 3-8 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Scatter Plot, Korrelationsnotiz, Hypothesenliste | CATWOE Canvas, Root Definition, Stakeholder Perspectives, Constraints | Root cause notes, Countermeasures |
Tagsno overlap | QualityProblem solvingRoot cause | Root causeQualityVisualization | Systems thinkingFramingStakeholders | Root causeIncidentLeanProblem solving |