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| Criterion |  Operations 8D Problem Solving |  UX Research Affinity Diagramming |  Decision Making Pareto Analysis |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | 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. | When research notes, feedback, or observations sit unconnected side by side, affinity diagramming sorts the raw material into solid themes. Many individual points turn into patterns that make decisions and opportunities clearer. | In many problem situations, effect is distributed unequally across many causes. A Pareto Analysis separates the few drivers with high leverage from the long remainder and focuses attention on what measurably moves the needle. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | High | Low | Low | Low |
Timedifferent | 1-6 Wochen | 45–90 min | 30-60 min | 15-30 min |
Participantsdifferent | 4-10 | 3-10 | 1-6 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Theme clusters, Insight statements, Opportunity areas | Pareto Chart, Top Causes, Focus List | Root cause notes, Countermeasures |
Tags1 shared | QualityProblem solvingRoot cause | SynthesisQualitativeRoot cause | PrioritizationQualityFocusRoot cause | Root causeIncidentLeanProblem solving |