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| Criterion |  Operations Scatter Diagram |  Systems Thinking Current Reality Tree |  Operations Failure Mode and Effects Analysis |  Operations 8D Problem Solving |
|---|---|---|---|---|
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. | A Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once. | 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. | 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. |
Complexitydifferent | Low | High | High | High |
Timedifferent | 30-90 min | 2-6 h | 2-6 h | 1-6 Wochen |
Participantsdifferent | 1-4 | 3-8 | 3-10 | 4-10 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Scatter Plot, Korrelationsnotiz, Hypothesenliste | Current Reality Tree, Core Problems, Intervention Ideas | FMEA Table, Risk Priority, Mitigation Actions | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tags1 shared | Root causeQualityVisualization | Systems thinkingRoot causeConstraintsCausality | RiskQualityOperationsRoot cause | QualityProblem solvingRoot cause |