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| Criterion |  Decision Making PERT Estimation |  Operations 8D Problem Solving |  Operations Root Cause Tree Analysis |
|---|---|---|---|
Purposedifferent | 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 an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. |
Complexitydifferent | Medium | High | Medium |
Timedifferent | 15-45 min | 1-6 Wochen | 1-3 h |
Participantsdifferent | 1-8 | 4-10 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | PERT Estimate, Expected Value, Risk Notes | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Cause Tree, Evidence Notes, Countermeasures |
Tagsno overlap | EstimationUncertaintyRisk | QualityProblem solvingRoot cause | Root causeTreeIncidentQuality |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
