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| Criterion |  Operations Fishbone Diagram |  Operations Ivy Lee Method |  Operations Failure Mode and Effects Analysis |  Operations ABC 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. | With a restless workday full of too many open items, the method creates radical simplicity. It directs attention to a short sequence instead of a broad, still-open field. | 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. | With many similar objects of differing economic significance, the method prioritizes effort by effect. It separates what needs regular steering from what rarely needs attention. |
Complexitydifferent | Low | Low | High | Low |
Timedifferent | 30-60 min | 5-10 min daily | 2-6 h | 30-60 min |
Participantsdifferent | 2-8 | 1 | 3-10 | 1-5 |
Formatdifferent | Workshop | Async | Workshop | Async |
Outputdifferent | Fishbone Diagram, Cause Categories, Investigation Backlog | Daily Priority List, Completion Notes | FMEA Table, Risk Priority, Mitigation Actions | ABC Classification, Focus Rules, Control List |
Tagsno overlap | Root causeQualityOperations | PrioritizationProductivityExecution | RiskQualityOperationsRoot cause | PrioritizationOperationsPortfolio |