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| Criterion |  Agile T-Shirt Sizing |  Operations Fishbone Diagram |  Agile Ideal Days |
|---|---|---|---|
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 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 effort needs to be thought of as real working time, it offers a simple common denominator for comparison. It sorts work by value, risk, and delivery ability. The result is captured as Ideal Day Estimates, Assumption Notes, and Capacity Caveats. |
Complexitysame | Low | Low | Low |
Timedifferent | 15-45 min | 30-60 min | 15-60 min |
Participantsdifferent | 2-12 | 2-8 | 2-9 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Size Buckets, Rough Backlog Map, Split Candidates | Fishbone Diagram, Cause Categories, Investigation Backlog | Ideal Day Estimates, Assumption Notes, Capacity Caveats |
Tagsno overlap | EstimationAgileRoadmap | Root causeQualityOperations | EstimationEffortAgile |
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