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Selected:3-Circle Venn Diagram8D Problem SolvingFailure Mode and Effects AnalysisRoot Cause Analysis
| Criterion | ![]() Facilitation 3-Circle Venn Diagram | ![]() Operations 8D Problem Solving | ![]() Operations Failure Mode and Effects Analysis | ![]() Operations Root Cause Analysis |
|---|---|---|---|---|
Purposedifferent | When three perspectives matter at the same time, a Three-Circle Venn Diagram shows the overlaps and remainders precisely. It makes visible where shared effect arises and where only a partial perspective applies. | 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 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. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. |
Complexitydifferent | Low | High | High | Medium |
Timedifferent | 15-45 min | 1-6 Wochen | 2-6 h | 1-4 h |
Participantsdifferent | 2-8 | 4-10 | 3-10 | 3-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Venn Diagram, Overlap Notes, Differentiators | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | FMEA Table, Risk Priority, Mitigation Actions | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan |
Tagsno overlap | ComparisonFacilitationAlignment | QualityProblem solvingRoot cause | RiskQualityOperationsRoot cause | Root causeProblem solvingQualityIncident |



