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IASSC ICGB Exam Questions

Exam Name: IASSC Certified Lean Six Sigma Green Belt Exam
Exam Code: ICGB
Related Certification(s): IASSC Lean Six Sigma Green Belt Certification
Certification Provider: IASSC
Actual Exam Duration: 240 Minutes
Number of ICGB practice questions in our database: 200 (updated: May. 03, 2026)
Expected ICGB Exam Topics, as suggested by IASSC :
  • Topic 1: Six Sigma Roles & Responsibilities/ Gage Repeatability & Reproducibility
  • Topic 2: Statistical Process Control (SPC)/ Critical to Quality Characteristics (CTQ’s)
  • Topic 3: Confidence & Prediction Intervals/ Elements of the Response Plan/ Deliverables of a Lean Six Sigma Project
  • Topic 4: Normal Distributions & Normality/ Overproduction, Correction, Inventory, Motion, Overprocessing, Conveyance, Waiting
  • Topic 5: General History of Six Sigma & Continuous Improvement/ Financial Evaluation & Benefits Capture
  • Topic 6: Attribute & Discrete Capability/ Understanding Inference/ Multiple Regression Analysis
  • Topic 7: Hypothesis Testing with Non-Normal Data/ Voice of the Customer, Business and Employee
  • Topic 8: General Concepts & Goals of Hypothesis Testing/ One and Two Sample Proportion
  • Topic 9: Control Chart Anatomy/ Data Collection for SPC/ Building a Business Case & Project Charter
  • Topic 10: Process Mapping, SIPOC, Value Stream Map/ Failure Modes & Effects Analysis (FMEA)
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James Torres

7 days ago
When I took the ICGB I found the Analyze Phase hypothesis testing questions with pooled versus unpooled variance really tricky; the scenario wording made it unclear which test to use and time pressure didn't help. Sketching the sample sizes and variances and checking assumptions before choosing the test saved me several minutes.
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Rachel Taylor

4 days ago
Honestly, the Measure Phase MSA questions tripped me up more because I hesitated on when to recommend a full Gage R&R versus a basic repeatability check.
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Karen Flores

5 days ago
Remember that many Control Phase prompts want a practical monitoring plan and reaction steps rather than theoretical detail about control limits.
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Jeffrey Jones

5 days ago
Another tricky topic was process capability calculations like Cp versus Cpk when the mean shifts, because answer choices often look subtly different.
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Hyman

26 days ago
I passed the IASSC Certified Lean Six Sigma Green Belt exam, and the Pass4Success practice questions were essential. One challenging question was about calculating process variation using standard deviation in the Measure Phase. I wasn't entirely sure about the steps, but I still passed.
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Zona

1 month ago
Nerves hit hard before the exam, yet Pass4Success gave me a solid framework and practice that boosted my momentum. To future test-takers: keep moving forward.
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Stefania

1 month ago
I was anxious about tricky questions, but Pass4Success demystified the material with practical examples and reviews. Trust the process—your success is possible.
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Tawanna

2 months ago
Pass4Success practice exams were a game-changer for me. Tip: Practice active listening during the exam.
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Veronica

2 months ago
Just cleared the IASSC Green Belt exam, and the Pass4Success practice questions were crucial. There was a question in the Define Phase about creating a project charter. I had some doubts about the key elements to include, but I managed to get through it.
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Devon

2 months ago
Passed the IASSC IASSC Certified Lean Six Sigma Green Belt exam with pass4success practice exams. Tip: Prioritize topics based on exam weightage.
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Rima

2 months ago
I passed the IASSC Certified Lean Six Sigma Green Belt exam, and the Pass4Success practice questions were a great help. One tricky question was about selecting appropriate control charts in the Control Phase. I wasn't sure when to use an I-MR chart, but I still passed.
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Ronna

3 months ago
IASSC Green Belt exam conquered! Pass4Success, your practice tests were a perfect match. Thank you!
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Mary

3 months ago
Process capability indices (Cp, Cpk) felt like a trap; I second-guessed every step. Pass4Success practice offered clear explanations that clarified calculation steps.
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Janessa

3 months ago
I successfully passed the IASSC Green Belt exam, thanks to the Pass4Success practice questions. There was a question in the Improve Phase about using the 5S methodology to organize a workspace. I had some doubts about the sustain step, but I managed to pass.
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Julio

3 months ago
Green Belt achievement unlocked! Pass4Success, you're the real MVP. Your prep materials were invaluable.
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Goldie

4 months ago
Hypothesis testing under time pressure for small samples was rough. Pass4Success timed quizzes trained my pace and helped me spot which tests to apply.
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Rosendo

4 months ago
Phew! IASSC Green Belt certified. Pass4Success prep was key - their questions were so similar to the real thing!
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Dyan

4 months ago
The SIPOC and VOC linkage question style was tricky; I kept missing how inputs drive outputs. pass4success drills reinforced the flow, and I finally saw the logic.
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Arthur

4 months ago
The DMAIC data interpretation was brutal—confusing control charts and CTQ mapping. pass4success practice exams helped me practice the chart questions until the patterns clicked.
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Jannette

5 months ago
Happy to share that I passed the IASSC Certified Lean Six Sigma Green Belt exam, and the Pass4Success practice questions were invaluable. One challenging question was about using regression analysis in the Analyze Phase. I wasn't sure how to interpret the coefficients, but I got through it.
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Christa

5 months ago
Wow, the IASSC Green Belt exam was tough, but I made it! Pass4Success materials were a lifesaver. Highly recommend!
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Nelida

5 months ago
The morning of the test, butterflies were real, but Pass4Success's targeted practice and confidence-building tips turned worry into readiness. Stay focused and finish strong.
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Man

5 months ago
I doubted my pace and accuracy, but Pass4Success helped me pace effectively with timed drills and concise modules. You've got this—consistency wins the race.
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Ressie

6 months ago
Nervous thoughts clouded my mind at first, yet pass4success provided clear study plans and simulations that built my confidence. Believe in your prep and keep pushing forward.
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Joana

6 months ago
I passed the IASSC Green Belt exam, and the Pass4Success practice questions were incredibly useful. There was a tricky question in the Measure Phase about calculating the sigma level of a process. I had some doubts about the formula, but I still passed.
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Vicky

6 months ago
My hands trembled before I began, but pass4success gave me structured prep and real-time feedback that boosted my belief in myself. Stay determined—your breakthrough awaits!
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Gail

6 months ago
Just passed the IASSC Lean Six Sigma Green Belt exam! Thanks Pass4Success for the spot-on practice questions. Saved me so much time!
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Tiffiny

7 months ago
I started the exam day feeling nervous and unsure, but Pass4Success walked me through focused review strategies and practice tests, and I finished with confidence—to any future test-takers, you can do this too!
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Mollie

7 months ago
Just passed the IASSC Certified Lean Six Sigma Green Belt exam, and the Pass4Success practice questions were a big help. One question that stumped me was about defining project scope in the Define Phase. I wasn't entirely sure how to set the boundaries, but I managed to get through it.
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Adelle

7 months ago
Just got my Green Belt certification! Pass4Success was key to my quick and effective preparation.
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Xuan

7 months ago
I passed the IASSC Green Belt exam, and the Pass4Success practice questions were essential. There was a question in the Control Phase about using a control plan to maintain process improvements. I had some doubts about the elements to include, but I still passed.
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Maryln

8 months ago
IASSC Green Belt exam success! Thanks Pass4Success for the accurate practice questions.
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Amber

8 months ago
I successfully cleared the IASSC Certified Lean Six Sigma Green Belt exam, thanks to the Pass4Success practice questions. One challenging question was about implementing mistake-proofing techniques in the Improve Phase. I wasn't sure which poka-yoke method to apply, but I got through it.
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Linn

10 months ago
Passed IASSC Green Belt with flying colors! Pass4Success made all the difference in my prep.
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Noble

11 months ago
Green Belt certified! Pass4Success's exam questions were a perfect match for the real thing.
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Carmen

1 year ago
Sampling is crucial. Any final thoughts or advice for future test-takers?
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Nikita

1 year ago
Nailed the IASSC Green Belt exam! Pass4Success questions were spot on.
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Vinnie

1 year ago
My advice would be to focus on practical applications of concepts. The exam tests your ability to apply knowledge in real-world scenarios. And definitely use Pass4Success for prep - their questions were spot-on and saved me so much study time!
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Otis

1 year ago
Passed the exam with confidence! Thanks to Pass4Success for their comprehensive materials. The exam included questions on process performance metrics - know how to calculate and interpret yield, throughput, and cycle time.
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Carmelina

1 year ago
Just became a Lean Six Sigma Green Belt! Pass4Success helped me prepare in record time.
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Yong

1 year ago
Just got certified! Pass4Success's practice exams were incredibly helpful. The actual exam had several questions on team dynamics and leadership - understand different team roles and conflict resolution strategies.
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Darrel

1 year ago
Successfully passed the exam! Pass4Success's question bank was a lifesaver. The exam included questions on 5S methodology - understand each step and how it contributes to workplace organization.
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Donte

1 year ago
IASSC Green Belt exam conquered! Grateful for Pass4Success's relevant study materials.
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Catalina

1 year ago
Aced my Green Belt exam! Thanks to Pass4Success for their targeted prep materials. The exam had several questions on sampling strategies - understand different sampling methods and when to use them in data collection.
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Hillary

1 year ago
Excited to share that I passed the IASSC Green Belt exam, and the Pass4Success practice questions were very helpful. There was a question in the Analyze Phase about conducting a hypothesis test. I was unsure whether to use a t-test or an ANOVA, but I managed to pass.
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Jolene

1 year ago
Just earned my certification! Pass4Success's practice tests were invaluable. The exam included questions on stakeholder analysis - know how to create and interpret stakeholder matrices.
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Denny

1 year ago
Green Belt success! Pass4Success's practice tests were crucial for my last-minute preparation.
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Reid

1 year ago
The exam tested my understanding of visual management tools. Be prepared to identify and explain the purpose of different visual controls used in lean environments.
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Chantay

1 year ago
Successfully completed my LSSGB certification! Pass4Success's exam questions were spot-on. The exam had a focus on non-normal data analysis - understand when and how to use non-parametric tests.
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Dominga

1 year ago
I passed the IASSC Certified Lean Six Sigma Green Belt exam, and the Pass4Success practice questions were a great help. One tricky question was about measuring process performance using a histogram in the Measure Phase. I wasn't sure how to interpret the data distribution, but I still passed.
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Cristy

1 year ago
Passed my IASSC Green Belt today! Pass4Success made studying efficient and effective.
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Ashton

1 year ago
Just cleared the Green Belt exam! Thanks to Pass4Success for their comprehensive question bank. The exam included several questions on hypothesis testing - know when to use different tests!
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Broderick

1 year ago
Just passed the IASSC Green Belt exam, and the Pass4Success practice questions were crucial. There was a question in the Define Phase about creating a SIPOC diagram. I had some doubts about categorizing certain process steps, but I managed to get through it.
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Elouise

1 year ago
I successfully passed the IASSC Certified Lean Six Sigma Green Belt exam, and the Pass4Success practice questions were invaluable. One question that puzzled me was about control charts in the Control Phase. I wasn't entirely sure when to use an X-bar chart versus an R-chart, but I still passed.
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Eun

1 year ago
Voice of the Customer (VOC) was a key topic in my exam. Expect questions on VOC data collection methods and how to translate customer needs into measurable requirements.
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Samira

1 year ago
IASSC Green Belt certified! Pass4Success questions matched the real exam perfectly.
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Aron

2 years ago
Happy to share that I passed the IASSC Green Belt exam, and the Pass4Success practice questions were a big help. There was a question in the Improve Phase about selecting the best solution using a Pugh Matrix. I was a bit confused about the criteria weighting, but I got through it.
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Agustin

2 years ago
The exam tested my knowledge of control plans. Be ready to identify key elements of a control plan and understand how it relates to the Control phase of DMAIC.
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Cherelle

2 years ago
I passed the IASSC Certified Lean Six Sigma Green Belt exam, thanks to the Pass4Success practice questions. One challenging question was about root cause analysis in the Analyze Phase. I wasn't sure which tool to use between Fishbone Diagram and 5 Whys, but I still managed to pass.
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Lelia

2 years ago
Wow, aced the IASSC Green Belt test! Pass4Success materials were a lifesaver for quick prep.
upvoted 0 times
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Mila

2 years ago
The exam tested my knowledge of DMAIC phases. Be prepared to sequence activities within each phase correctly. Understanding the logical flow of the DMAIC methodology is crucial.
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Denae

2 years ago
Just cleared the IASSC Green Belt exam, and the Pass4Success practice questions were a lifesaver. During the Measure Phase, there was a tricky question on calculating process capability indices like Cp and Cpk. I had some doubts about interpreting the results, but it all worked out in the end.
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Earlean

2 years ago
Just passed my IASSC Lean Six Sigma Green Belt exam! Grateful to Pass4Success for their spot-on practice questions. The exam had several questions on process mapping - make sure you can identify and interpret different types of process maps!
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Bernadine

2 years ago
I recently passed the IASSC Certified Lean Six Sigma Green Belt exam, and I must say the Pass4Success practice questions were incredibly helpful. One question that stumped me was about identifying the Voice of the Customer (VOC) in the Define Phase. I wasn't entirely sure how to prioritize customer requirements effectively, but I managed to get through it.
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Johanna

2 years ago
Just passed the IASSC Lean Six Sigma Green Belt exam! Thanks Pass4Success for the spot-on practice questions.
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Carin

2 years ago
My exam experience was successful as I passed the IASSC Certified Lean Six Sigma Green Belt exam using Pass4Success practice questions. The exam included topics such as Critical to Quality Characteristics and Statistical Process Control. One question that I found challenging was related to CTQ's, where I had to identify the key characteristics that directly impact customer satisfaction. Despite my initial uncertainty, I managed to select the correct answers and pass the exam.
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Cristy

2 years ago
Just passed the IASSC Lean Six Sigma Green Belt exam! Be prepared for questions on DMAIC methodology, especially in the Measure phase. Focus on understanding process capability and Sigma level calculations. Thanks to Pass4Success for the spot-on practice questions that helped me prepare efficiently!
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Salome

2 years ago
I passed the IASSC Certified Lean Six Sigma Green Belt exam with the help of Pass4Success practice questions. The exam covered topics like Six Sigma Roles & Responsibilities and Statistical Process Control. One question that stood out to me was about Gage Repeatability & Reproducibility, where I had to calculate the measurement system variation. Thankfully, I was able to answer it correctly and pass the exam.
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Free IASSC ICGB Exam Actual Questions

Note: Premium Questions for ICGB were last updated On May. 03, 2026 (see below)

Question #1

Lean Six Sigma's general approach to solving significant challenges related to a process is called _________________.

Reveal Solution Hide Solution
Correct Answer: C

Question #2

When two Inputs have an impact on the Output together yet seem to have no or little impact on their own this is called a/an ________________.

Reveal Solution Hide Solution
Correct Answer: A

Question #3

According to a manager it takes an average weekday commute of 39 minutes with a Standard Deviation of 7 minutes for the employees to get to work while they use their personal vehicles for their office commute while the management set a policy of not more than 40 minutes for their daily one-way commute. A survey conducted one day on 70 employees showed an average of 34 minutes commuting time using the metro public transportation system with a Standard Deviation of 21 minutes. If the Standard Deviation is uncontrollable then the other option to increase the probability of coming in on time via personal vehicles to work could be ____________?

Reveal Solution Hide Solution
Correct Answer: C

Question #4

Which statement(s) describe an undesirable situation when implementing SPC?

Reveal Solution Hide Solution
Correct Answer: D

Question #5

__________ Distributions occur when data comes from several sources that are supposed to be the same yet are not.

Reveal Solution Hide Solution
Correct Answer: A

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