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| Criterion |  Operations DMAIC |  Decision Making Constraint Analysis |  Operations Kepner-Tregoe |  Operations Fishbone Diagram |
|---|---|---|---|---|
Purposedifferent | For a process problem with fluctuating performance, the method brings analysis and improvement into a disciplined sequence. It creates a framework in which numbers, causes, and control come together. | When an initiative stalls, the limit often lies not in the idea but in hard or soft boundary conditions. Constraint Analysis separates these limits and shows which of them can actually be shaped. | 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. | 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 | High | Low |
Timedifferent | 2-12 Wochen | 30-90 min | 2-8 h | 30-60 min |
Participantsdifferent | 3-10 | 2-8 | 2-8 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Project Charter, Measurement Plan, Cause Analysis, Control Plan | Constraint List, Hard/Soft Classification, Option Impact Notes, Decision Boundaries | Problem Analysis, Decision Analysis, Risk Plan | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | Continuous improvementQualityProcess improvement | ConstraintsDecisionPlanningOptions | Problem solvingRoot causeDecisionOperations | Root causeQualityOperations |