At the top of this page, you’ll find a button granting you complete access to the Six Sigma Green Belt practice test. Additionally, further down, we offer a detailed practice exam for the Six Sigma Green Belt, designed to help you identify your strengths and highlight areas requiring further focus. 

To support your targeted study, we’ve crafted specialized quizzes concentrated on specific segments of the Six Sigma Green Belt exam. These quizzes are tailored to aid in honing your skills in areas needing extra refinement, ensuring a comprehensive preparation for your exam.

The Best CFA Exam Study Materials

The Six Sigma Green Belt certification exam is structured around a set of core competencies related to Six Sigma methodology and its application within an organization. The exam typically covers various domains that reflect the phases of the Six Sigma project lifecycle: Define, Measure, Analyze, Improve, and Control, along with an overview of Six Sigma and its impact on an organization. 

Here is the breakdown:

Domain 1: Overview: Six Sigma and the Organization

  • Exam percentage: 5-10%
  • Number of questions: 11
  • Focus: This section covers the basics of Six Sigma principles, the history of Six Sigma, its value to an organization, and the role of a Green Belt within a Six Sigma project. It might also include questions on understanding organizational goals, Six Sigma metrics, and basic concepts of project management within a Six Sigma framework.

Welcome to your Six Sigma Green Belt Domain 1: Overview of Six Sigma and the Organization

Domain 2: Define

  • Exam percentage: 10-15%
  • Number of questions: 20
  • Focus: This domain focuses on the initial phase of a Six Sigma project, including project identification, project management basics, voice of the customer (VOC), and project charter development. Candidates must understand how to define a problem, set project objectives, and identify stakeholders.

Welcome to your Six Sigma Green Belt Domain 2: Define

Domain 3: Measure

  • Exam percentage: 20-30%
  • Number of questions: 20
  • Focus: The Measure phase is critical and covers data collection strategies, measurement systems analysis, basic statistics, process capability analysis, and data presentation. This domain tests the candidate’s ability to measure current performance to establish a baseline for improvement.

Welcome to your Six Sigma Green Belt Domain 3: Measure

Domain 4: Analyze

  • Exam percentage: 20-30%
  • Number of questions: 18
  • Focus: In the Analyze phase, the emphasis is on identifying the root causes of problems. This domain includes exploratory data analysis, hypothesis testing, and process analysis techniques such as failure modes and effects analysis (FMEA) and process mapping.

Welcome to your Six Sigma Green Belt Domain 4: Analyze

Domain 5: Improve

  • Exam percentage: 20-25%
  • Number of questions: 16
  • Focus: This section covers the development and implementation of solutions to improve processes. It includes topics on the design of experiments (DOE), risk assessment, and solution selection and implementation. Candidates should understand how to generate, select, and apply solutions to eliminate root causes of defects.

Welcome to your Six Sigma Green Belt Domain 5: Improve

Domain 6: Control

  • Exam percentage: 10-15%
  • Number of questions: 15
  • Focus: The final phase of the project lifecycle, Control, ensures that improvements are sustained over time. This domain tests knowledge on control plans, statistical process control (SPC), total productive maintenance, and visual controls.

Welcome to your Six Sigma Green Belt Domain 6: Control

Exam Domain% of ExamFocus Area
Overview: Six Sigma and the Organization5-10%Basics of Six Sigma, value to organization, Green Belt role
Define10-15%Project identification, management, VOC, project charter
Measure20-30%Data collection, measurement systems, basic statistics
Analyze20-30%Root cause analysis, hypothesis testing, process mapping
Improve20-25%Solution development and implementation, DOE, risk assessment
Control10-15%Control plans, SPC, maintenance, visual controls

Important Considerations:

  • Certification Requirements: Beyond passing the exam, some organizations may require candidates to participate in a Six Sigma project and submit a project affidavit.
  • Recertification: Periodic recertification may be required to ensure that Green Belts stay up to date with Six Sigma methodologies.
  • Continuous Learning: Six Sigma is a vast field with ongoing developments; continuous learning and application of Six Sigma tools and techniques are crucial for professional growth.

Six Sigma Green Belt Exam Breakdown

The Six Sigma Green Belt certification exam is a professional examination designed to validate an individual’s understanding and skills in the Six Sigma methodology at the Green Belt level. This level focuses on individuals who are part of a Six Sigma project team and have a good understanding of the core to advanced elements of Six Sigma, including how to perform and interpret Six Sigma tools and how to apply them within a structured process improvement framework.

Breakdown of the Six Sigma Green Belt Exam

  • Exam Format and Duration: The exam typically consists of multiple-choice questions, which candidates must complete within a specified time frame. The number of questions and the duration can vary depending on the certifying body, but a common format is around 100 questions to be answered in 2 to 3 hours.
  • Core Subjects and Knowledge Areas: The exam covers a wide range of topics within the Six Sigma body of knowledge, including:
    • DMAIC (Define, Measure, Analyze, Improve, Control): Understanding of each phase of the DMAIC process.
    • Data Collection and Analysis: Skills in collecting and analyzing data to identify root causes of defects.
    • Process and Quality Improvement: Knowledge on improving processes and quality levels.
    • Project Management: Basic project management skills to lead small projects or parts of larger projects.
    • Lean Principles: An understanding of Lean concepts and their integration with Six Sigma for process improvement.
  • Preparation and Study Resources:
    • Official Certification Bodies: Different organizations offer Six Sigma Green Belt certification, including the American Society for Quality (ASQ), International Association for Six Sigma Certification (IASSC), and others. Visiting their official websites can provide specific details about the exam, including syllabus, format, fees, and scheduling.
    • Books and Study Guides: There are many books and study guides available specifically designed for Six Sigma Green Belt exam preparation. Titles such as “The Certified Six Sigma Green Belt Handbook” by ASQ are popular among candidates.
    • Training Programs: Numerous online and in-person training programs are available that offer comprehensive courses on Six Sigma Green Belt. These programs often include lectures, study materials, and practice exams.
    • Online Resources and Forums: Online forums and websites dedicated to Six Sigma provide valuable insights, tips, and resources for exam preparation. Platforms like Six Sigma Study Guide and iSixSigma are useful for candidates looking for study materials and advice from peers.
  • Certification and Recertification: After passing the exam, candidates receive their Green Belt certification. This certification may have a validity period after which recertification is required. The recertification process varies by certifying body but often involves earning a certain number of professional development units (PDUs) through continuing education or retaking the exam.

How to Become Six Sigma Green Belt Certified

Becoming a Six Sigma Green Belt involves a process of learning the Six Sigma methodology, which focuses on improving quality and efficiency in business processes. Here’s a step-by-step guide on how to become Six Sigma Green Belt certified, including resources for study and certification:

  1. Understand the Basics of Six Sigma: Before diving into certification, ensure you understand what Six Sigma is, its methodologies (DMAIC: Define, Measure, Analyze, Improve, Control), and its importance in business process improvement.
  2. Choose a Certification Body: Several organizations offer Six Sigma Green Belt certification. Some of the most recognized include ASQ (American Society for Quality), IASSC (International Association for Six Sigma Certification), and CSSC (Council for Six Sigma Certification). Each has its own certification process, exam, and fees.
    • ASQ: ASQ Six Sigma Green Belt
    • IASSC: IASSC Six Sigma Green Belt Certification
    • CSSC: CSSC Six Sigma Green Belt Certification
  3. Meet the Prerequisites: Some organizations require you to have a certain amount of experience working on Six Sigma projects or in roles that involve quality management. Check the specific prerequisites for the certification body you choose.
  4. Prepare for the Exam: Preparation can involve self-study, online courses, or in-person training programs. Study materials include the Body of Knowledge for the Green Belt certification, statistical analysis software training, and project management principles. Many providers offer study guides, textbooks, and practice exams.
    • ASQ Six Sigma Green Belt Handbook
    • Coursera Six Sigma Green Belt Certification Course
    • Udemy Six Sigma Green Belt Training
  5. Complete a Six Sigma Project (Optional): Some certifications require you to complete a Six Sigma project that demonstrates your ability to apply Six Sigma principles. This requirement varies by certification body.
  6. Take the Certification Exam: Register for the exam through the certification body you’ve chosen. The exam will cover the Six Sigma Green Belt Body of Knowledge, including DMAIC project methodology, statistical analysis, and process improvement techniques.
  7. Maintain Your Certification: After becoming certified, you’ll need to keep your certification active. This typically involves completing continuing education units (CEUs) or retaking the exam periodically. Check with your certification body for specific recertification requirements.
  8. Apply Six Sigma in Your Career: Use your certification to improve processes within your organization, mentor others, and enhance your career prospects in quality management and process improvement roles.

Our Experience Teaching Six Sigma Green Belt Candidates To Pass The Exam

Creating the Six Sigma Green Belt practice tests has been an enriching journey marked by both hurdles and triumphs. At Career Employer, our educational mission has been shaped by the exam’s diverse subject matter and the unique needs of our students, all with the common goal of excelling in the examination. This process has allowed us to tailor our resources and support to best meet the aspirations and requirements of those we serve, ensuring a comprehensive preparation for their success.

Teaching a Six Sigma Green Belt certification course from a lecturer’s perspective involves a comprehensive approach to adult learning, focusing on both theoretical concepts and practical applications of Six Sigma methodologies. As a lecturer, your primary goal is to equip students with the knowledge and skills to improve processes, reduce errors, and enhance quality in their respective workplaces. Here’s how you might approach it, including resources that can be beneficial.

Understanding the Audience

First, it’s crucial to understand that your students likely come from diverse professional backgrounds, each looking to apply Six Sigma principles to different areas of their work. Tailoring your teaching methods to accommodate various learning styles—visual, auditory, and kinesthetic—can enhance engagement and comprehension.

Curriculum Development

Your curriculum should cover the DMAIC (Define, Measure, Analyze, Improve, Control) methodology comprehensively, as it’s the backbone of Six Sigma projects. Each phase should be taught with a balance of theoretical knowledge and case studies that demonstrate real-world applications.


  • Objective: Teach students to define project goals and customer (internal and external) deliverables.
  • Resource: The American Society for Quality (ASQ) offers resources and case studies on project definition.


  • Objective: Instruct on measuring current processes to establish baselines for improvement.
  • Resource: Use Minitab or other statistical software tutorials to teach data collection and analysis.


  • Objective: Guide students in identifying the root causes of defects.
  • Resource: Provide access to scholarly articles on Six Sigma methodologies via platforms like Google Scholar.


  • Objective: Teach the design of experiments and solution development for process improvement.
  • Resource: Offer simulations and process improvement games to apply concepts practically.


  • Objective: Instruct on maintaining improvements and controlling future process performances.
  • Resource: Use case studies from the Institute of Industrial and Systems Engineers (IISE) to demonstrate control mechanisms.

Engaging Teaching Methods

Incorporate interactive elements such as group projects, presentations, and simulations to foster a hands-on learning environment. Engage students in role-playing exercises to solve hypothetical problems using Six Sigma tools.

Continuous Assessment

Assessments should be continuous and varied—include quizzes, project work, and presentations to evaluate students’ understanding and application of Six Sigma principles comprehensively.

Online Resources and Tools

  • ASQ Six Sigma Green Belt Handbook: A comprehensive guide and reference for both students and lecturers.
  • Minitab: Offer tutorials and access to statistical software for data analysis exercises.
  • Lean Six Sigma Online Resources: Websites like iSixSigma provide articles, tools, and forums for discussion.

Certification Preparation

Finally, ensure your course prepares students for the Green Belt certification exam. This involves not only teaching the material but also familiarizing students with the exam format and providing practice exams.

The committed team at Career Employer has meticulously developed this practice test for the Six Sigma Green Belt certification, drawing upon their extensive expertise and experience in Six Sigma Green Belt exam preparation. Our experts have led over a thousand Green Belt professionals to successfully pass the official Six Sigma Green Belt certification exam. Comprising highly Green Belt professionals, each with over a decade of specialized management experience, our team brings a wealth of knowledge to this endeavor. We offer various versions of the practice exam, each designed to cater to different learning styles and needs, ensuring that every candidate is well-prepared to achieve their certification goals.

Effective Study Strategies and Methods

To effectively prepare for the Six Sigma Green Belt exam, combining a strategic study plan with the right resources and study techniques is crucial. Here’s a comprehensive approach based on insights from various reputable sources:

Understand the Exam Structure and Content

Familiarize yourself with the Six Sigma Green Belt Body of Knowledge (BoK), which outlines the specific areas you’ll be tested on. This includes phases like Define, Measure, Analyze, Improve, and Control (DMAIC), along with statistical tools and Lean principles. Resources like the ASQ (American Society for Quality) and the Council for Six Sigma Certification offer detailed guides and self-study materials to cover these topics thoroughly​​​​.

Choose the Right Study Materials

Select study materials that are precise and reliable. This can range from official certification preparation courses offered by ASQ, which provide interactive and engaging content tailored to the Green Belt BoK, to the free self-study guides issued by The Council for Six Sigma Certification​​​​. It’s also recommended to review practice exams and flashcards for quick revision, especially focusing on key metrics, statistical tools, and Lean principles​​.

Practice Time Management

Time management during the exam is vital. Knowing how much time you have per question helps avoid rushing and making mistakes. Practice dividing the total exam time by the number of questions to estimate how long you can spend on each​​.

Use Flashcards for Revision

Flashcards are an excellent tool for last-minute revisions. They should focus on one idea, fact, or concept per card, with simplicity and clarity being key. Incorporating visuals and categorizing flashcards based on DMAIC phases or specific subject matter can enhance your memory and focus on weak areas​​.

Mock Tests

Taking at least one mock test under timed conditions is crucial. It helps simulate the exam environment, allowing you to adjust your time management strategy and identify areas that require further study. Mock tests are a valuable tool for boosting confidence and ensuring you’re prepared for the actual exam​​.

Engage with Online Forums and Study Groups

Engaging with online communities can provide additional insights, tips, and resources that can aid your study process. Platforms like the ASQ forums or Six Sigma-related LinkedIn groups offer opportunities to connect with peers and experts who can share their experiences and advice.

Additional Tips

  • Self-Study Guidance: Begin with foundational Six Sigma materials before diving into study guides. Utilize the Bodies of Knowledge (BoKs) provided by major organizations to understand what will be tested. Engage with case studies and practical applications of Six Sigma to deepen your understanding​​.
  • Learn from Others: Look into case studies of how others have passed their exams. This can offer valuable insights into effective study strategies and common pitfalls to avoid​​.

While studying for the exam, remember that a majority of employers will prefer to train their staff. Here is what one Reddit user had to say:

I have a Green Belt Do not do one on your own! Most employers want their employees to do the certification for them and will cover the costs.

twinwood36 – Reddit User

Another user answering a question on its importance in the industry, highly recommends the certification for those who want to get into consulting.

I have it and I am in consulting, it will help you stand out agile methodologies are used, Ik it’s not agile, but it’s also process improvement.

MaximusResumeService – Reddit User

Remember, the key to success in the Six Sigma Green Belt exam is a balanced approach that combines understanding of theoretical concepts with practical application and effective exam strategies.


Exam FeeUSD 469 (Members: USD 369)USD 295
Retake FeeUSD 269N/A
Prerequisites3 years of experienceNone
Preparation and Study MaterialsVaries (question bank, handbook, courses)Recommended training
Additional CostsTraining, materials, recertificationTraining, materials

The cost of the Six Sigma Green Belt certification exam varies depending on the certifying organization and can include several fees related to application, study materials, training, the exam itself, and any post-exam certifications. Here’s a breakdown of the costs associated with obtaining a Six Sigma Green Belt certification from two major certifying bodies, ASQ (American Society for Quality) and IASSC (International Association for Six Sigma Certification):

ASQ (American Society for Quality)

  • Exam Fee: USD 469 for non-members, with a USD 100 discount for ASQ members, making it USD 369 for members. If you need to retake the exam, it costs USD 269​​.
  • Prerequisites: 3 years of on-the-job experience in a full-time, paid role​​.
  • Preparation and Study Materials: ASQ offers various resources to prepare for the exam, including a question bank, a handbook, and a study guide. They also provide classroom, self-paced online, and virtual certification prep courses​​. The costs for these materials and courses vary.

IASSC (International Association for Six Sigma Certification)

  • Exam Fee: USD 295 for the Green Belt certification exam​​.
  • Prerequisites: There are no prerequisites required to sit for the IASSC Certified Lean Six Sigma Green Belt Exam​​.
  • Preparation: While not required, it’s recommended that candidates obtain Lean Six Sigma training through a qualified institution, trainer, or corporate program. IASSC also offers a non-proctored Green Belt Evaluation Exam to help candidates assess readiness​​.

Additional Costs to Consider

  • Training Courses: The cost for Six Sigma training courses can vary significantly, from a few hundred to several thousand dollars, depending on the length, depth, and provider of the training​​.
  • Study Materials: Additional costs may be incurred for textbooks, study guides, software, or other materials needed for exam preparation​​.
  • Retake Fees: If you fail the exam, both organizations offer a discounted rate for retaking the exam​​.
  • Certification Renewal Fees: ASQ requires recertification every three years, with associated costs, while IASSC certifications are recognized perpetually without the need for renewal​​​​.

It’s important to consider all these costs when planning to obtain your Six Sigma Green Belt certification, as well as the return on investment, which can be significant in terms of career advancement and salary increase. The specific costs for training and study materials will vary based on the provider and the format of the course (online, classroom-based, etc.), so it’s advisable to research and compare options that best fit your learning style and budget.

Reliable Study Materials and Resources

To prepare for the Six Sigma Green Belt certification exam, several online resources stand out for their comprehensive coverage, interactive learning formats, and adherence to the Six Sigma Body of Knowledge (BoK). Here are some of the best resources available online:

  • ASQ (American Society for Quality) offers a self-paced, e-learning course designed to review the Six Sigma Green Belt BoK. This course is ideal for those who have prior knowledge of Six Sigma and statistics, aiming to refresh their knowledge and identify strengths and weaknesses of the BoK. It’s engaging, interactive, and compatible with mobile devices, allowing study anytime, anywhere​​.
  • Six Sigma Online guides preparing for the Six Sigma Green Belt certification, including tips on studying the Green Belt Training Manual and using practice questions to test your knowledge. This platform emphasizes the practical application of Six Sigma principles and offers free White Belt certification, which can be a good starting point for beginners​​.
  • Purdue University offers an online Lean Six Sigma Green Belt Certification that includes 4.5 CEUs (continuing education units) upon completion. Their program is thorough, offering added Lean training and preparing students for the rigor of the Six Sigma Black Belt course. The course takes about 10 weeks to complete and includes assignments relating to case studies to simulate real-world projects​​.
  • Dooey’s Six Sigma Training provides a combined training course for both Green and Black Belts, covering over 45 topics through 100+ videos and practice questions. This course is suitable for all levels, offering a deep understanding of statistical and analytical methods necessary for Six Sigma proficiency​​.
  • Villanova University offers an online Six Sigma Green Belt course enhanced by weekly virtual live classes taught by practitioners. The curriculum includes advanced animations, videos from industry experts, and interactive learning tools. Students earn a digital badge upon successful completion, which can be shared on resumes and social media​​.
  • Purdue University’s Lean Six Sigma Online Certification Training Program not only offers a Green Belt course but also complementary courses in Lean Principles and a Green Belt Refresher for those certified through another provider. The program prides itself on its instructional excellence and the online experience it provides, including hands-on instruction from industry pros​​.

Jerry Wright of encourages users to only use the tools that best fit the project.

Use only those key Lean Six Sigma Tools that best fit your project. Students often want to use all or most of the tools in the toolbox. But that is not necessary. Use what tool(s) makes sense and you’ll substantially improve the measures.

Jerry Wright –

These resources provide a mix of theoretical knowledge, practical application, and test preparation tools that are crucial for passing the Six Sigma Green Belt certification exam. Depending on your learning style, time availability, and current knowledge level, you can choose the one that best fits your preparation needs.

Tips for Exam Day

To excel on your Six Sigma Green Belt exam, blending structured study strategies with practical application and community engagement is key. Here’s a synthesis of the best tips gathered from various sources:

  • Eligibility and Study Plan: Before diving into preparation, ensure you’re eligible for the exam. Create a study plan that fits your schedule, ideally dedicating about 30 minutes a day to study. This consistency is more effective than longer, less frequent sessions​​.
  • Gap Analysis: Conduct a gap analysis using the ASQ Six Sigma Green Belt Body of Knowledge to identify areas you need to focus on. This helps tailor your study efforts more effectively​​.
  • Practice Exams and Active Learning: Engage in active learning by taking numerous practice exams. This technique not only helps in memorizing but also in understanding the application of concepts. Research suggests that active retrieval of information significantly enhances memory retention over passive study methods like reading or highlighting​​​​.
  • Study Resources: Utilize the Green Belt Training Manual and other study guides to stay up-to-date with the latest Six Sigma methodologies. These resources are designed to cover the entire spectrum of the Green Belt curriculum and are regularly updated​​.
  • Training Courses: Enroll in a Green Belt certification course. Whether you prefer self-study or instructor-led courses, these programs offer comprehensive knowledge and skills necessary for the exam and practical application in real business environments​​​​.
  • Methodology Immersion: Beyond academic study, immerse yourself in the Six Sigma methodology. This could involve taking on projects under the guidance of a Black Belt or Master Black Belt to gain hands-on experience. Such immersion helps create concrete associations between theoretical knowledge and its practical application​​.
  • Community Engagement: Join Six Sigma forums or communities, like iSixSigma, to discuss topics, ask questions, and share insights with peers. Engaging with a community can provide diverse perspectives and tips from others who have gone through the same process​​.
  • Time Management and Application: Learn to manage your time effectively during the exam by using strategies like flagging questions for review. Additionally, apply what you’re learning in real-time, which not only reinforces the concepts but also demonstrates their practical value​​.
  • Spaced Repetition: Implement spaced repetition in your study plan. Reviewing material over spaced intervals helps combat the forgetting curve, making your study sessions more efficient​​.
  • Next Steps: Always have a plan for your next goal post-exam, whether it’s aiming for a Black Belt certification or another professional development milestone. Continuous growth should be your target​​.

By integrating these strategies into your preparation, you can approach your Six Sigma Green Belt exam with confidence and a solid foundation of knowledge and skills.

Post-Exam: Next Steps

After passing the Six Sigma Green Belt exam, there are several post-exam strategies and next steps to consider to fully leverage your new certification and skills:

  1. Engage with Online Communities and Forums: Joining forums and online communities dedicated to Lean Six Sigma can provide you with valuable insights, help you stay updated on the latest trends, and connect you with professionals who can share their experiences and advice. The Benchmark Six Sigma Forum is an example of a vibrant community where you can find discussions on various topics related to Six Sigma practices, including post-exam advice and project implementation tips​​.
  2. Apply Your Knowledge Through Projects: One of the first steps after certification should be applying your knowledge to real-world projects. suggests beginning with finding a sponsor for your project, scoping your project appropriately, and drafting an A3 to outline your project’s goals, scope, and key metrics. This practical application helps solidify your understanding and demonstrates the value of Lean Six Sigma methodologies in improving processes and outcomes​​.
  3. Continuous Learning and Skill Enhancement: The field of Lean Six Sigma is dynamic, with continuous improvements and updates to methodologies. Engage in continuous learning through additional courses, workshops, and certification levels (like Black Belt) to deepen your expertise. Participating in webinars and subscribing to relevant blogs and newsletters can also keep you informed of the latest developments and best practices​​.
  4. Preparation and Exam Strategy: For those still preparing for the exam or considering recertification, Firebrand Training offers practical tips such as testing yourself with practice questions, using study guides, taking a certification course, immersing yourself in the methodology, and joining a Six Sigma Green Belt forum. These strategies can enhance your understanding and application of Lean Six Sigma principles, ensuring you’re well-prepared for the exam and beyond​​.
  5. Network and Professional Development: Networking with other Lean Six Sigma professionals can open up new opportunities for collaboration, mentorship, and career advancement. Attend industry conferences, workshops, and seminars to meet like-minded individuals and learn from their experiences. LinkedIn and professional associations related to Lean Six Sigma offer platforms for networking and professional growth.
  6. Implement Lean Six Sigma in Your Organization: Finally, work towards implementing Lean Six Sigma methodologies within your organization. This can involve identifying processes that need improvement, proposing projects, and working with teams to apply Lean Six Sigma tools and techniques. Demonstrating the tangible benefits of your projects can help in gaining buy-in from stakeholders and furthering your organization’s continuous improvement journey.

By following these strategies, you can effectively apply your Six Sigma Green Belt certification toward personal development and organizational improvement.


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