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| Criterion |  Operations DMAIC |  Decision Making Argument Mapping |  Operations Kepner-Tregoe |  Operations Root Cause Analysis |
|---|---|---|---|---|
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 statements, evidence, and counterarguments get mixed up, a debate quickly loses its structure. Argument Mapping breaks a thesis down into its reasoning and makes visible what it really rests on. | 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 keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. |
Complexitydifferent | High | Medium | High | Medium |
Timedifferent | 2-12 Wochen | 1-3 h | 2-8 h | 1-4 h |
Participantsdifferent | 3-10 | 1-8 | 2-8 | 3-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Project Charter, Measurement Plan, Cause Analysis, Control Plan | Argument Map, Evidence Gaps, Decision Rationale | Problem Analysis, Decision Analysis, Risk Plan | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan |
Tagsno overlap | Continuous improvementQualityProcess improvement | SensemakingDecisionRationale | Problem solvingRoot causeDecisionOperations | Root causeProblem solvingQualityIncident |