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| Criterion |  Operations Fishbone Diagram |  Operations Root Cause Analysis |  Agile Affinity Estimation |
|---|---|---|---|
Purposedifferent | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | 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. | When many tasks need to be classified quickly, it sorts them by perceived effort and similarity. It reduces the effort of fine-grained estimation for large volumes. |
Complexitydifferent | Low | Medium | Medium |
Timedifferent | 30-60 min | 1-4 h | 30-90 min |
Participantsdifferent | 2-8 | 3-8 | 3-12 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Fishbone Diagram, Cause Categories, Investigation Backlog | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | Affinity Size Map, Grouped Estimates, Unclear Items |
Tagsno overlap | Root causeQualityOperations | Root causeProblem solvingQualityIncident | EstimationBacklogRelative sizing |
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