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| Criterion |  Operations Fishbone Diagram |  Architecture LASR (Lightweight Approach for Software Reviews) |  Operations Scatter Diagram |  Operations 5 Whys |
|---|---|---|---|---|
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. | LASR helps development teams identify where their software falls short of important quality goals and which improvements to consider. A small group with existing system knowledge can make an initial assessment and investigate open questions in more detail. | 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 a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Low | Medium | Low | Low |
Timedifferent | 30-60 min | 3–4 h for initial assessment; preparation and deeper analysis additional | 30-90 min | 15-30 min |
Participantsdifferent | 2-8 | 1 or a small team; particularly suitable for 3–4 people | 1-4 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Fishbone Diagram, Cause Categories, Investigation Backlog | Lean Mission Statement describing the software’s purpose, Prioritized quality goals and evaluation criteria, Risks and estimated gaps against quality goals, More closely examined findings and open checks | Scatter Plot, Korrelationsnotiz, Hypothesenliste | Root cause notes, Countermeasures |
Tagsno overlap | Root causeQualityOperations | ArchitectureQualityRiskAssessmentLean | Root causeQualityVisualization | Root causeIncidentLeanProblem solving |