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| Criterion |  Agile T-Shirt Sizing |  Operations Root Cause Analysis |
|---|---|---|
Purposedifferent | When effort only needs to be classified roughly, it makes comparability more important than false precision. It helps sort work quickly into manageable sizes. | 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. |
Complexitydifferent | Low | Medium |
Timedifferent | 15-45 min | 1-4 h |
Participantsdifferent | 2-12 | 3-8 |
Formatsame | Workshop + async | Workshop + async |
Outputdifferent | Size Buckets, Rough Backlog Map, Split Candidates | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan |
Tagsno overlap | EstimationAgileRoadmap | Root causeProblem solvingQualityIncident |
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