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| Criterion |  Agile Affinity Estimation |  Agile Ideal Days |  Facilitation Nominal Group Technique |
|---|---|---|---|
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. | 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. | When loud voices could dominate a round, Nominal Group Technique protects individual thinking time from group effects. It collects ideas separately first and only then enables shared weighting. |
Complexitydifferent | Medium | Low | Medium |
Timedifferent | 30-90 min | 15-60 min | 60-120 min |
Participantsdifferent | 3-12 | 2-9 | 5-12 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Affinity Size Map, Grouped Estimates, Unclear Items | Ideal Day Estimates, Assumption Notes, Capacity Caveats | Ranked Ideas, Clarified Options, Group Priority |
Tagsno overlap | EstimationBacklogRelative sizing | EstimationEffortAgile | FacilitationPrioritizationVotingInclusion |
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