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| Criterion |  Operations PDCA Cycle |  Operations Root Cause Analysis |  Operations Kepner-Tregoe |
|---|---|---|---|
Purposedifferent | For an improvement that still has to prove itself in everyday work, the method runs it through small learning loops. It connects planning, checking, and standardization into a repeatable learning mode. | 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. | 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. |
Complexitydifferent | Low | Medium | High |
Timedifferent | 1 h bis mehrere Wochen | 1-4 h | 2-8 h |
Participantsdifferent | 1-8 | 3-8 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | PDCA Log, Experiment Plan, Learning Outcome, Standard Change | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | Continuous improvementLeanExperiments | Root causeProblem solvingQualityIncident | Problem solvingRoot causeDecisionOperations |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
