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| Criterion |  Operations DMAIC |  Operations Root Cause Analysis |  Operations Scatter Diagram |  Operations 8D Problem Solving |
|---|---|---|---|---|
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 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. | 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 an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. |
Complexitydifferent | High | Medium | Low | High |
Timedifferent | 2-12 Wochen | 1-4 h | 30-90 min | 1-6 Wochen |
Participantsdifferent | 3-10 | 3-8 | 1-4 | 4-10 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Project Charter, Measurement Plan, Cause Analysis, Control Plan | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | Scatter Plot, Korrelationsnotiz, Hypothesenliste | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tags1 shared | Continuous improvementQualityProcess improvement | Root causeProblem solvingQualityIncident | Root causeQualityVisualization | QualityProblem solvingRoot cause |