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Six Sigma Practice Tests

Master your Six Sigma certification exams with official PlanetCert Practice Tests. Access real exam questions, detailed explanations, and our advanced adaptive simulator.

8 Exams
2003 Questions
Updated Aug 25

Six Sigma Exam Catalog

8 Available Exams

ICBB

Iassc Certified Lean Six Sigma Black Belt

213 Q&A Aug 2025
Simulator Sample Questions
ICGB

Iassc Certified Lean Six Sigma Green Belt

255 Q&A Aug 2025
Simulator Sample Questions
ICYB

IASSC Certified Lean Six Sigma Yellow Belt

313 Q&A Sep 2021
Simulator Sample Questions
LSSBB

Lean Six Sigma Black Belt

300 Q&A Aug 2025
Simulator Sample Questions
LSSGB

Lean Six Sigma Green Belt

248 Q&A Aug 2025
Simulator Sample Questions
LSSMBB

Lean Six Sigma Master Black Belt

239 Q&A Aug 2025
Simulator Sample Questions
LSSWB

Lean Six Sigma White Belt

217 Q&A Aug 2025
Simulator Sample Questions
LSSYB

Lean Six Sigma Yellow Belt

218 Q&A Aug 2025
Simulator Sample Questions

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Six Sigma Certification Pathway

A clear progression from beginner to expert.

Foundations

Entry belts for awareness, support, and comparison

IASSC Certified Lean Six Sigma Yellow Belt

ICYB
Closed-book, 60-question proctored exam with no prerequisites.

Six Sigma Yellow Belt Certification

CSSYB
ASQ's open-book yellow-belt credential; not yet represented in the local DB.

Lean Six Sigma White Belt

LSSWB
CSSC entry point; the self-paced path starts with three chapter exams.

Lean Six Sigma Yellow Belt

LSSYB
CSSC yellow-belt track with no prerequisites.

Practitioner

Project support, analysis, and process improvement

IASSC Certified Lean Six Sigma Green Belt

ICGB
Closed-book, 100-question proctored exam with no prerequisites.

Six Sigma Green Belt Certification

CSSGB
ASQ's open-book green-belt credential; requires paid work experience and is not yet in the local DB.

Lean Six Sigma Green Belt

LSSGB
CSSC green-belt track; Level II is the advanced route.

Leader

Black Belt project leadership and advanced analysis

IASSC Certified Lean Six Sigma Black Belt

ICBB
Closed-book, 150-question proctored exam with no prerequisites.

Six Sigma Black Belt Certification

CSSBB
ASQ's open-book black-belt credential; requires paid experience plus a project affidavit and is not yet in the local DB.

Lean Six Sigma Black Belt

LSSBB
CSSC black-belt track; Level III is the advanced route.

Mastery

Coaching, governance, and portfolio review

Six Sigma Master Black Belt Certification

CMBB
ASQ's portfolio-review plus exam path; requires a current CSSBB and is not yet in the local DB.

Lean Six Sigma Master Black Belt

LSSMBB
CSSC master-level track; requires prior Black Belt experience and advanced project work.

Recent Changes

1986
Motorola origin of Six Sigma: Bill Smith developed Six Sigma at Motorola as a process-improvement...
1993-06
ASQ documents early Six Sigma quality programs: ASQ's Quality Progress coverage describes the Six...
2017-03-01
IASSC current-status recertification policy takes effect: IASSC says its certifications are recog...
September 24, 2020
PeopleCert acquired and now manages IASSC

Six Sigma certification ladder and provider tracks

flowchart TB WB[White Belt] --> YB[Yellow Belt] --> GB[Green Belt] --> BB[Black Belt] --> MBB[Master Black Belt] subgraph IASSC ICYB[ICYB] --> ICGB[ICGB] --> ICBB[ICBB] end subgraph ASQ CSSYB[CSSYB] --> CSSGB[CSSGB] --> CSSBB[CSSBB] --> CMBB[CMBB] end subgraph CSSC LSSWB[LSSWB] --> LSSYB[LSSYB] --> LSSGB[LSSGB] --> LSSBB[LSSBB] --> LSSMBB[LSSMBB] end

The perfect Fit for all professionals

New quality and process-improvement professionals

Professionals focused on new quality and process-improvement professionals within this certification portfolio.

Analysts and engineers supporting improvement projects

Professionals focused on analysts and engineers supporting improvement projects within this certification portfolio.

Team leads and supervisors moving into belt-based roles

Professionals focused on team leads and supervisors moving into belt-based roles within this certification portfolio.

Experienced Black Belts preparing for coaching or strategy work

Professionals focused on experienced black belts preparing for coaching or strategy work within this certification portfolio.

Quality managers and operational excellence teams

Professionals focused on quality managers and operational excellence teams within this certification portfolio.

Your Complete Exam Solution

Best-In-Class Practice Tests

Authentic, regularly updated questions that mirror the real exam. Verified, current material — not recycled dumps.

Topical Breakdown

Study by domain, pinpoint weak areas, and focus your time where it matters most. Every topic mapped to the official syllabus.

Flashcard Mode

Rapid-fire review to reinforce key concepts. Flip through questions and answers at your own pace before exam day.

Planet Cert has what you need

01:45:22

Planet Cert offers top-notch tools for perfecting your exam preparation. From our interactive Exam Simulator to our comprehensive Study Modes, we ensure you are fully equipped to tackle your Six Sigma certification. We even provide detailed rationales so you understand exactly why an answer is correct.

But the preparation doesn't stop at just answering questions. Our platform guarantees full coverage of the official syllabus, breaking down complex topics into digestible formats. After all, passing on your first attempt is the ultimate goal.

At Planet Cert, we're committed to making certification painless by building the most robust learning platform. Backed by industry experts, our practice materials are more dynamic than traditional tools on the market, and we're always looking to improve our students' experience and workflow.

Ready to start your Six Sigma journey?

Six Sigma FAQs

Which Six Sigma belts are most common?
White, Yellow, Green, Black, and Master Black Belt are the standard progression. Not every provider offers every level.
Which exams have no prerequisites?
IASSC Yellow, Green, and Black have no prerequisites. CSSC standard exams also start without prerequisites at the entry and standard levels. ASQ uses experience requirements for Green, Black, and MBB.
Are the exams open book?
ASQ and CSSC standard exams are open book. IASSC exams are closed book and proctored.
How do the main providers differ?
IASSC is exam-focused with perpetual recognition and a three-year current-status model. ASQ adds experience requirements and uses Prometric. CSSC offers standard and self-paced paths with no-expiration certification.
What is special about ASQ Master Black Belt?
It requires a current ASQ CSSBB, a portfolio review, and an exam. Green Belt-level work does not count toward the portfolio.
Does Six Sigma certification expire?
IASSC certifications are perpetual but tracked as Current for three years. CSSC says its certifications do not expire. ASQ uses recertification rules.
Where should a beginner start?
Yellow Belt is the usual starting point. CSSC White Belt is even more introductory, while IASSC Yellow Belt is the smallest verified exam path in this portfolio.

Student Reviews

★★★★★

Passed AZ-104 with 856/1000! The practice tests here are harder than the real thing which is exactly what I needed.

Sarah J.Azure Admin
★★★★★

Failed twice before finding PlanetCert. Their explanations for wrong answers finally made things click. Got 82% on my third attempt - passing score was 72%. FINALLY certified!

Mike ChenAWS Solutions Architect
★★★★★

SecurityPlus done ✓ 785/900 baby!

Emily R.CompTIA Security+