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| Criterion |  Operations Failure Mode and Effects Analysis |  Operations Scatter Diagram |  Operations 5 Whys |  Operations Fishbone Diagram |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | 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. |
Complexitydifferent | High | Low | Low | Low |
Timedifferent | 2-6 h | 30-90 min | 15-30 min | 30-60 min |
Participantsdifferent | 3-10 | 1-4 | 2-6 | 2-8 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop |
Outputdifferent | FMEA Table, Risk Priority, Mitigation Actions | Scatter Plot, Korrelationsnotiz, Hypothesenliste | Root cause notes, Countermeasures | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tags1 shared | RiskQualityOperationsRoot cause | Root causeQualityVisualization | Root causeIncidentLeanProblem solving | Root causeQualityOperations |