The LSSIAP Lean Six Sigma Body of Knowledge (BoK) defines the complete set of competencies, tools, and concepts covered across all LSSIAP LSS certification levels. It serves as the reference framework for both examination preparation and professional practice.
Core Knowledge Domains
- Define Phase: Project selection, Charter, SIPOC, Voice of the Customer, CTQ, Stakeholder analysis, Project management fundamentals
- Measure Phase: Process mapping, Data collection, Measurement System Analysis, Process capability (Cp, Cpk), Basic statistics, Control charts
- Analyze Phase: Root cause analysis, Hypothesis testing, Regression, Correlation, ANOVA, Fishbone/Ishikawa diagrams, 5 Whys
- Improve Phase: Design of Experiments (DoE), Solution selection, Lean tools (5S, SMED, Kanban, Poka-Yoke), Piloting
- Control Phase: Statistical Process Control (SPC), Control plans, Standardization, Mistake-proofing, Handover
Lean Principles
- Value and waste identification (8 wastes — DOWNTIME)
- Value Stream Mapping
- Flow and pull systems
- Continuous improvement (Kaizen)
- Total Productive Maintenance (TPM)
- Visual management and 5S
The Body of Knowledge is regularly reviewed and updated to reflect current best practices. All LSSIAP certifications are aligned with this framework.