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| Criterion |  Operations Causal Factor Analysis |  Operations Scatter Diagram |  Operations Barrier Analysis |  Operations Root Cause Tree Analysis |
|---|---|---|---|---|
Purposedifferent | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. | 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 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. | 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. |
Complexitydifferent | High | Low | Medium | Medium |
Timedifferent | 2-6 h | 30-90 min | 2-4 h | 1-3 h |
Participantsdifferent | 3-10 | 1-4 | 2-6 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Scatter Plot, Korrelationsnotiz, Hypothesenliste | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Cause Tree, Evidence Notes, Countermeasures |
Tags1 shared | CausalityIncidentRoot causeTimeline | Root causeQualityVisualization | Root causeSafetyIncident | Root causeTreeIncidentQuality |