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Criterion
Paper illustration for Three-Point Estimation.
Decision Making
Three-Point Estimation
Paper illustration for Dot Estimation.
Facilitation
Dot Estimation
Paper fishbone diagram with a measurable effect at the head and six labeled cause branches.
Operations
Fishbone Diagram
Paper illustration for Fault Tree Analysis.
Operations
Fault Tree Analysis
Purposedifferent
A single estimate for effort, time, or risk often looks too smooth for the real uncertainty behind it. It separates options, evaluation criteria, and open risks. The result is captured as a Three-Point Estimate, Risk Range, and Assumption Notes.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 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.For a critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage.
Complexitydifferent
MediumLowLowHigh
Timedifferent
10-30 min je Item5-20 min30-60 min2-6 h
Participantsdifferent
1-83-202-83-8
Formatdifferent
Workshop + asyncWorkshopWorkshopWorkshop + async
Outputdifferent
Three-Point Estimate, Risk Range, Assumption NotesEffort Heatmap, Risk Signals, Discussion TargetsFishbone Diagram, Cause Categories, Investigation BacklogFault Tree, Critical Paths, Cause Hypotheses, Control Actions
Tagsno overlap
EstimationUncertaintyForecasting
EstimationEffortRisk
Root causeQualityOperations
RiskRoot causeSafety
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