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| Criterion |  Agile Affinity Estimation |  Product Discovery Test Card |
|---|---|---|
Purposedifferent | 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. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | Medium | Low |
Timedifferent | 30-90 min | 20-35 min |
Participantsdifferent | 3-12 | 1-5 |
Formatdifferent | Workshop | Workshop + async |
Outputdifferent | Affinity Size Map, Grouped Estimates, Unclear Items | Test Card with a pre-set threshold |
Tagsno overlap | EstimationBacklogRelative sizing | ExperimentsValidationDiscoveryHypothesis |
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