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| Criterion |  Operations Root Cause Tree Analysis |  Operations Barrier Analysis |  Operations Scatter Diagram |  Operations Root Cause Analysis |
|---|---|---|---|---|
Purposedifferent | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | 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. | 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 | Medium | Medium | Low | Medium |
Timedifferent | 1-3 h | 2-4 h | 30-90 min | 1-4 h |
Participantsdifferent | 2-8 | 2-6 | 1-4 | 3-8 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Scatter Plot, Korrelationsnotiz, Hypothesenliste | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan |
Tags1 shared | Root causeTreeIncidentQuality | Root causeSafetyIncident | Root causeQualityVisualization | Root causeProblem solvingQualityIncident |