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| Criterion |  Operations Root Cause Tree Analysis |  Agile Bucket System |  Operations A3 Problem Solving |  Agile Affinity Estimation |
|---|---|---|---|---|
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. | When a large batch of work needs a fast, rough estimate, it sorts items into predefined size buckets. It sorts work by value, risk, and delivery ability. The result is captured as a Bucketed Backlog, Relative Estimates, and Split Candidates. | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | 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. |
Complexitysame | Medium | Medium | Medium | Medium |
Timedifferent | 1-3 h | 30-90 min | 45-90 min | 30-90 min |
Participantsdifferent | 2-8 | 3-12 | 2-5 | 3-12 |
Formatdifferent | Workshop | Workshop | Workshop + async | Workshop |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | Bucketed Backlog, Relative Estimates, Split Candidates | A3 Report, Action Plan, Root Cause Analysis | Affinity Size Map, Grouped Estimates, Unclear Items |
Tagsno overlap | Root causeTreeIncidentQuality | EstimationBacklogRelative sizing | LeanProblem solvingCoachingOperations | EstimationBacklogRelative sizing |