View methods side by side.
Choose up to four methods. Add them using the search and share the comparison by copying its link.
| Criterion |  Operations Failure Mode and Effects Analysis |  Facilitation Dot Estimation |  Decision Making PERT Estimation |  Operations Fault Tree Analysis |
|---|---|---|---|---|
Purposedifferent | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. | 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. | 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. | 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 | High | Low | Medium | High |
Timedifferent | 2-6 h | 5-20 min | 15-45 min | 2-6 h |
Participantsdifferent | 3-10 | 3-20 | 1-8 | 3-8 |
Formatdifferent | Workshop | Workshop | Workshop + async | Workshop + async |
Outputdifferent | FMEA Table, Risk Priority, Mitigation Actions | Effort Heatmap, Risk Signals, Discussion Targets | PERT Estimate, Expected Value, Risk Notes | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions |
Tags1 shared | RiskQualityOperationsRoot cause | EstimationEffortRisk | EstimationUncertaintyRisk | RiskRoot causeSafety |