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| Criterion |  Operations Change Analysis |  Operations A3 Problem Solving |  Operations Family Tree Analysis |
|---|---|---|---|
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 a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | For a series of incidents with a similar pattern, the method arranges individual events as branches of a common origin. It makes visible which conditions keep recurring. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 45-120 min | 45-90 min | 2-4 h |
Participantsdifferent | 2-6 | 2-5 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Change Matrix, Cause Hypotheses, Validation Questions, Action List | A3 Report, Action Plan, Root Cause Analysis | Family Tree Diagram, Pattern Notes, Systemic Measures |
Tagsno overlap | ChangeRoot causeTroubleshootingComparison | LeanProblem solvingCoachingOperations | Root causePatternsIncidentSystemic |
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