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| Criterion |  Operations Fishbone Diagram |  Operations Scatter Diagram |  Operations 5 Whys |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | 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 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. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. |
Complexitydifferent | Low | Low | Low | High |
Timedifferent | 30-60 min | 30-90 min | 15-30 min | 2-6 h |
Participantsdifferent | 2-8 | 1-4 | 2-6 | 3-10 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop |
Outputdifferent | Fishbone Diagram, Cause Categories, Investigation Backlog | Scatter Plot, Korrelationsnotiz, Hypothesenliste | Root cause notes, Countermeasures | FMEA Table, Risk Priority, Mitigation Actions |
Tags1 shared | Root causeQualityOperations | Root causeQualityVisualization | Root causeIncidentLeanProblem solving | RiskQualityOperationsRoot cause |