What Is ILSSI?
The International Lean Six Sigma Institute (ILSSI) is a respected global certifying organization dedicated to advancing Lean Six Sigma education and professional practice. ILSSI’s approach combines statistical rigor, lean principles, and practical project leadership skills to drive meaningful, sustainable process improvement.
Their Black Belt certification represents mastery of the Lean Six Sigma methodology, strategic leadership, and the ability to lead complex improvement projects across departments and industries.
Visit ILSSI.org to learn more about their certifications and global reach.
What ILSSI Black Belt Candidates Should Know
To earn the ILSSI Black Belt certification, candidates must demonstrate:
- Deep mastery of Lean Six Sigma tools and DMAIC methodology
- Advanced statistical analysis and use of software like Minitab or SigmaXL
- Strategic thinking and portfolio-level project leadership
- The ability to coach Green and Yellow Belts
- Competence in Design for Six Sigma (DFSS) and innovation-driven design thinking
Candidates are typically expected to pass a comprehensive exam and present real-world project work that demonstrates measurable business impact.
ILSSI Black Belt BOK Topics
Below are the official ILSSI Black Belt Body of Knowledge topics. Linked topics connect directly to in-depth study guides on SixSigmaStudyGuide.com.
- Roles and Responsibilities of a Black Belt
- Portfolio Management – Programme Management
- Process Mining
- Design for Six Sigma (DFSS)
- Hoshin Kanri / Strategic Planning
- Inferential Statistics
- Central Limit Theorem
- Standard Error of the Mean
- Sampling Techniques
- Sample Size Calculation
- Confidence & Prediction Intervals
- Hypothesis Testing with Attribute Data
- One and Two Sample Proportion
- Chi-Squared (Contingency Tables)
- Non-Linear Regression
- Multiple Linear Regression
- Use of Stats Software (such as Minitab, SigmaXL)
- DOE Design Choices
- Full Factorial Experiments
- Fractional Factorial / Screening Experiments
- Binomial and Poisson Distribution and Calculations
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