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| Criterion |  Operations Change Analysis |  Operations 8D Problem Solving |  Facilitation Nominal Group Technique |  Facilitation Dot Voting |
|---|---|---|---|---|
Purposedifferent | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | 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 loud voices could dominate a round, Nominal Group Technique protects individual thinking time from group effects. It collects ideas separately first and only then enables shared weighting. | When a workshop has produced too many options and the group needs to condense quickly, dot voting makes preferences visible in a short time. It bundles individual votes into a solid signal for the next selection. |
Complexitydifferent | Medium | High | Medium | Low |
Timedifferent | 45-120 min | 1-6 Wochen | 60-120 min | 5-15 min |
Participantsdifferent | 2-6 | 4-10 | 5-12 | 3-20 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Change Matrix, Cause Hypotheses, Validation Questions, Action List | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Ranked Ideas, Clarified Options, Group Priority | Ranked list, Consensus signal, Shortlist |
Tagsno overlap | ChangeRoot causeTroubleshootingComparison | QualityProblem solvingRoot cause | FacilitationPrioritizationVotingInclusion | FacilitationVotingConsensusPrioritization |