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| Criterion |  Agile Bucket System |  Operations 5 Whys |  Operations A3 Problem Solving |
|---|---|---|---|
Purposedifferent | 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 single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. | 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. |
Complexitydifferent | Medium | Low | Medium |
Timedifferent | 30-90 min | 15-30 min | 45-90 min |
Participantsdifferent | 3-12 | 2-6 | 2-5 |
Formatdifferent | Workshop | Workshop | Workshop + async |
Outputdifferent | Bucketed Backlog, Relative Estimates, Split Candidates | Root cause notes, Countermeasures | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | EstimationBacklogRelative sizing | Root causeIncidentLeanProblem solving | LeanProblem solvingCoachingOperations |
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