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| Criterion |  Operations Scatter Diagram |  Operations Change Analysis |  Operations Fishbone Diagram |  Operations Kepner-Tregoe |
|---|---|---|---|---|
Purposedifferent | When the question is whether two measures are related, the method makes patterns in the data picture visible. It separates felt correlations from relationships that actually show up in the data. | 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. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. |
Complexitydifferent | Low | Medium | Low | High |
Timedifferent | 30-90 min | 45-120 min | 30-60 min | 2-8 h |
Participantsdifferent | 1-4 | 2-6 | 2-8 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Scatter Plot, Korrelationsnotiz, Hypothesenliste | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Fishbone Diagram, Cause Categories, Investigation Backlog | Problem Analysis, Decision Analysis, Risk Plan |
Tags1 shared | Root causeQualityVisualization | ChangeRoot causeTroubleshootingComparison | Root causeQualityOperations | Problem solvingRoot causeDecisionOperations |