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| Criterion |  Facilitation Dot Estimation |  Agile Ideal Days |  Agile Specification by Example |  Decision Making PERT Estimation |
|---|---|---|---|---|
Purposedifferent | When size or effort can only be estimated roughly, Dot Estimation condenses the group's experience into a quick range. It turns individual contributions into a visible selection. The result is captured as an Effort Heatmap, Risk Signals, and Discussion Targets. | 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 business rules need to become precise, it ties language, example, and test together. It sorts work by value, risk, and delivery ability. The result is captured as an Example Table and Acceptance Tests. | On complex initiatives, a plain average tends to understate just how uncertain the outcome really is. It separates options, evaluation criteria, and open risks. The result is captured as a PERT Estimate, Expected Value, and Risk Notes. |
Complexitydifferent | Low | Low | Medium | Medium |
Timedifferent | 5-20 min | 15-60 min | 60-90 min pro Feature | 15-45 min |
Participantsdifferent | 3-20 | 2-9 | 3-6 | 1-8 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Effort Heatmap, Risk Signals, Discussion Targets | Ideal Day Estimates, Assumption Notes, Capacity Caveats | Example Table, Acceptance Tests | PERT Estimate, Expected Value, Risk Notes |
Tagsno overlap | EstimationEffortRisk | EstimationEffortAgile | AgileRequirementsExamplesBehavior-Driven Development | EstimationUncertaintyRisk |