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ASQ · Project Management & Agile · Expert

ASQ Certified Six Sigma Black Belt (CSSBB) exam guide

Exam CSSBB

The ASQ Certified Six Sigma Black Belt (CSSBB) validates the ability to lead complex improvement projects, coach Green Belts and apply advanced statistics and team leadership. It requires completed Six Sigma projects with signed affidavits, which makes it one of the most credible Black Belt credentials.

Questions165 (150 scored, 15 unscored)
Time limit258 minutes
Passing score550 (scaled, out of 750)
Exam fee$585 USD
Valid for3 years
DeliveryPrometric computer-based testing (paper-based in some locations)

Format: Multiple choice, open book. Fee note: ASQ members save USD 100 on the initial fee; retake USD 385.

Who it's for

Experienced improvement leaders and quality professionals who lead cross-functional DMAIC projects and mentor Green Belts.

What the exam covers

Organization-wide Planning and Deployment—
Organizational Process Management and Measures—
Team Management—
Define—
Measure—
Analyze—
Improve—
Control—
Design for Six Sigma (DFSS) Frameworks and Methodologies—

A dash means the vendor does not publish a weight for that domain.

Eligibility & prerequisites

Required: Two completed Six Sigma projects with signed affidavits, or one completed project with affidavit plus three years of full-time paid work experience in one or more BoK areas.

Recommended: Leading multiple DMAIC projects and using DOE, regression and SPC in practice.

Keeping it active

Recertify every 3 years by earning 18 recertification units (RUs) or retaking the exam.

Skills & careers

Skills it validates

  • Project selection and deployment strategy
  • Leading and facilitating improvement teams
  • Advanced hypothesis testing and multiple regression
  • Design of experiments
  • Lean tools and waste elimination
  • Control plans and sustaining gains

Job roles

Six Sigma Black BeltContinuous Improvement ManagerQuality ManagerOperational Excellence LeadProcess Excellence ManagerSenior Quality Engineer

Where it fits in your path

Planning a degree too? See how this cert earns college credit in the College Credit Navigator.

Build my study plan

  1. Weeks 1-2: Download the CSSBB BoK and gather project affidavits; review deployment and team management.
  2. Weeks 3-5: Define and Measure: advanced MSA, capability, sampling.
  3. Weeks 6-9: Analyze and Improve: multivariate tools, regression, full and fractional factorial DOE.
  4. Weeks 10-11: Control, Lean and DFSS; build a tabbed reference binder.
  5. Weeks 12-14: Full timed practice exams with your actual reference set and calculator.

Make it yours: pick your exam date and weekly hours. We'll split your time by domain weight and give you a printable plan.

Exam-day tips

  • Bring a tabbed handbook (e.g. The Certified Six Sigma Black Belt Handbook) and statistical tables.
  • Practice DOE and regression interpretation questions; they take longest.
  • Team dynamics and change management questions are common; do not focus only on statistics.
  • At about 1.5 minutes per question, use references only for formulas.
  • Prepare affidavits early; ASQ verifies project completion.

Key terms for this exam

All 49 terms Study with thinQcards™

Frequently asked questions

How much does CSSBB cost?

USD 585 for nonmembers; ASQ members save USD 100. Retakes are USD 385.

Do I need a Green Belt first?

No. ASQ requires completed project affidavits and experience, not a Green Belt.

How do I recertify CSSBB?

Every three years by earning 18 recertification units or retaking the exam.

Is the CSSBB open book?

Yes. You may bring bound reference materials.

Is ASQ Black Belt worth it?

It is one of the most respected Black Belt credentials, particularly in manufacturing, healthcare and aerospace.

Official page: www.asq.org. Reviewed November 2026. Vendors change fees and objectives, so confirm with the vendor before you book. Spot something out of date? Tell us.