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| Criterion |  Operations Scatter Diagram |  Operations 8D Problem Solving |  Operations A3 Problem Solving |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | 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 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. | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit 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. |
Complexitydifferent | Low | High | Medium | High |
Timedifferent | 30-90 min | 1-6 Wochen | 45-90 min | 2-6 h |
Participantsdifferent | 1-4 | 4-10 | 2-5 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Scatter Plot, Korrelationsnotiz, Hypothesenliste | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | A3 Report, Action Plan, Root Cause Analysis | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | Root causeQualityVisualization | QualityProblem solvingRoot cause | LeanProblem solvingCoachingOperations | RiskQualityOperationsRoot cause |