Certified Six Sigma
Black Belt Exam (CSSBB)
Earn a globally recognized credential without enrolling in a course
Validate your mastery of Lean Six Sigma at the professional level with Lean Sigma Corporation’s Certified Six Sigma Black Belt (CSSBB) Exam. Designed for experienced practitioners and independent learners, this rigorous assessment measures your ability to apply the full DMAIC methodology, advanced statistical analysis, and leadership principles to real-world process improvement challenges.
As a premium independent certification authority and CPD Accredited Provider, Lean Sigma Corporation ensures your credential stands apart—recognized by employers, universities, and professional organizations worldwide. Successful candidates earn globally respected post-nominals and eligibility for PDUs, CEUs, and CPDs at no additional cost.
Demonstrate your expertise, validate your professional standing, and join a global network of Lean Six Sigma leaders—without the need to enroll in a course.
Who is This Exam For?
The Certified Six Sigma Black Belt (CSSBB) exam is designed for professionals who already possess advanced Lean Six Sigma knowledge and want an independent, globally recognized credential to validate their expertise. This exam is ideal for:
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Experienced Green Belts who are prepared for advanced analytical and leadership responsibilities
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Continuous improvement professionals leading or coaching major projects
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Quality managers, engineers, and operational leaders applying Six Sigma tools in practice
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Consultants and trainers who require a verifiable Black Belt credential for clients
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Candidates who completed Black Belt training elsewhere and now need an accredited certification
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Professionals advancing toward senior CI or Master Black Belt roles
If you already understand DMAIC, statistical methods, and improvement leadership, this exam provides an opportunity to demonstrate Black Belt-level mastery officially.
Exam Structure & Format
Objective: Demonstrate your knowledge and proficiency at the Black Belt certification level.
- Questions: 150
- Duration: 3 Hours
- Question Format: Multiple Choice
- Delivery: Asynchronous
- Passing Score: 80%
- Attempts: 2
Certification & Verification
Upon passing the CSSBB exam, you will receive:
- Custom Digital Certificate
- Certification Directory Listing
- Unique Certification Number
- The CSSBB verifiable credential from an accredited certification provider
Your certification will be independently verifiable, ensuring credibility and long-term value.
There are no formal prerequisites to sit for the CSSBB exam
There are no formal prerequisites to sit for the CSSBB exam. However, candidates are strongly encouraged to have prior Lean Six Sigma Green Belt training, or hands-on experience participating in improvement projects, or a solid working knowledge of DMAIC and standard Six Sigma tools.
If you are unsure whether you’re ready, Lean Sigma Corporation also offers a CSSBB Certification Course designed to fully prepare candidates for this exam.
What the CSSBB Exam Validates
The CSSBB exam assesses your ability to understand and apply Lean Six Sigma concepts at the Black Belt level, including:
Successful completion of the CSSBB exam demonstrates readiness to operate at the Black Belt level and to lead data-driven improvement efforts within an organization.
The CSSBB exam validates advanced Six Sigma competency through independent assessment rather than course completion alone.
Enrollment Includes
Exam Body of Knowledge
Certified Six Sigma Black Belt Exam (CSSBB)
| Exam Title |
Exam Attempts |
Exam Questions |
Pass Score |
Time Limit |
Pass Rate |
Earned Designation |
Recertification Required? | Price |
|---|---|---|---|---|---|---|---|---|
| CSSBB Exam | 2 | 150 | 80% | 3Hrs. | 98.2% | CSSBB | No | $450 |
Certification Requirements
- Pass the CSSBB Exam (80%, 3 Hours, 2 Attempts)
- Provide Your Professional Certification Review
This Exam Does NOT Require a Project | Statistical Software is NOT Required
Course versions refer to Minitab, SigmaXL, and JMP, which are not relevant for Exams only | DESIGNATION KEY: CSS = Certified Six Sigma | BB = Black Belt | GB = Green Belt | YB = Yellow Belt | PDU = Professional Development Units | CEU = Continuing Education Units | CPD = Continuing Professional Development
**Pass Rate: (#Passes/#Exams) for the Period 1/1/25 - 12/12/25; Unique Students
CSSBB Exam Body of Knowledge
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Define Phase
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Overview of Six Sigma
What is Six Sigma
Six Sigma History
Y=f(x) Approach
Six Sigma Methodology
Roles & Responsibilities -
Six Sigma Fundamentals
Defining a Process
VOC & CTQ's
QFD
Cost of Poor Quality
Pareto Analysis -
Lean Six Sigma Projects
Six Sigma Metrics
Rolled Throughput Yield
Business Case & Charter
Project Team Selection
Project Risk Management
Project Planning -
Lean Fundamentals
Lean and Six Sigma
History of Lean
Seven Deadly Muda
Five-S (5S)
Define Phase Test
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Measure Phase
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Process Definition
Cause & Effect Diagram
Cause & Effect Matrix
Process Mapping
FMEA
Theory of Constraints -
Six Sigma Statistics
Basic Statistics
Descriptive Statistics
Distributions & Normality
Graphical Analysis -
MSA
Precision & Accuracy
Bias, Linearity & Stability
Gage R&R
Variable & Attribute MSA -
Process Capability
Capability Analysis
Concept of Stability
Attribute vs Discrete
Monitoring Techniques
Measure Phase Test
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Analyze Phase
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Patterns of Variation
Multi-Vari Analysis
Classes of Distributions -
Inferential Statistics
Understanding Inference
Sampling Techniques
Sample Size
Central Limit Theorem -
Hypothesis Testing
Hypothesis Testing
Statistical Significance
Risk; Alpha & Beta
Types of Hypothesis Tests -
Hyp. Tests Normal
1-sample t-test
2-Sample t-test
Paired t-test
1-sample variance
One Way ANOVA -
Hyp. Tests Non-Normal
Mann-Whitney
Moods Median
Kruskal-Wallis / Friedman
1 Sample Sign & Wilcoxon
1 & 2 Sample Proportions
Chi-Squared
Test of Equal Variances
Analyze Phase Test
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Improve Phase
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Simple Linear Reg.
Correlation
X-Y Diagram
Regression Equations
Residuals Analysis -
Multiple Regression
Non-Linear Reg.
Multiple Linear Reg.
Confidence Intervals
Residuals Analysis
Box-Cox Transformation
Stepwise Regression
Logistic Regression -
Design of Experiment
Experiment Objectives
Experimental Methods
DOE Design Considerations -
Full Factorial DOE
2k Full Factorial Designs
Linear & Quadratic Models
Orthogonal Designs
Fit, Model & Center Points -
Fractional Factorial DOE
Fractional Designs
Confounding Effects
Experimental Resolution
Improve Phase Test
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Control Phase
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SPC
Data Collection for SPC
Individuals Charts
Xbar Charts
Proportions Charts
CumSum, EWMA Charts
Control Chart Anatomy
Subgroups & Sampling
Control Limits -
Lean Controls
Control Methods for 5S
Kanban
Poka-Yoke -
Six Sigma Control Plans
Cost Benefit Analysis
Control Plan Elements
Response Plan Elements
Control Phase Test -
CSSBB Exam
Certification Requirements
Frequently Asked Questions
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Certified Six Sigma Black Belt Exam (CSSBB)
Online Certification Exam
