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| Criterion |  Operations Root Cause Analysis |  Operations Family Tree Analysis |  Operations Root Cause Tree Analysis |
|---|---|---|---|
Purposedifferent | 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. | For a series of incidents with a similar pattern, the method arranges individual events as branches of a common origin. It makes visible which conditions keep recurring. | 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. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 1-4 h | 2-4 h | 1-3 h |
Participantsdifferent | 3-8 | 2-6 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | Family Tree Diagram, Pattern Notes, Systemic Measures | Cause Tree, Evidence Notes, Countermeasures |
Tags2 shared | Root causeProblem solvingQualityIncident | Root causePatternsIncidentSystemic | Root causeTreeIncidentQuality |
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