ICGB
IASSC Certified Lean Six Sigma Green Belt (ICGB)
Real exam: 100 questions · 180 minutes · Pass mark: 70%
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A plant's 5S scores are always above 95%, but audits are announced a week in advance and the area is often cluttered on other days. What should change?
All 10 free questions with answers and an explanation for every option
The IASSC Green Belt exam has 100 questions across the five DMAIC phases, the largest being Measure with about 32. We've handpicked 577 questions in English, as in the exam, with an Arabic explanation for every option, to help you push for a top score before test day!
- 100 questions in 180 min, like the real test
- 577 questions covering the main scoring topics, with explanations
- 70% pass mark, with targeted practice on your weak spots
See the gap to your target score Practise the units costing you the most marks A full mock exam like the real one
Every option explained so you understand why
What you get
- 577questions in the bankPractise with the answer shown right away, or sit a full timed mock
- 5unitsSplit by the exam syllabus
- 49flashcardsTo lock in terms and definitions
- 60quick review pointsEach unit in a few key lines
Unit map
- 01Define Phase19 questions
- 02Measure Phase32 questions
- 03Analyze Phase22 questions
- 04Improve Phase8 questions
- 05Control Phase19 questions
Exam facts
IASSC Certified Lean Six Sigma Green Belt (ICGB) — Number of questions: 100 questions. Exam time: 180 minutes. Pass mark: 70%. Calculator: allowed. Exam fee: USD 350 (IASSC website). Source: International Association for Six Sigma Certification (IASSC), delivered by PeopleCert (Last verified: 2026-11-10). Question bank: full mock exams of 100 questions in 180 minutes, like the real test with a result for every unit, plus 577 explained questions across 5 units, every option explained, a review of your mistakes, and two ways to practise: see the answer right away, or sit a full timed mock. Free questions: a 10-question diagnostic test covering the main units, no sign-up; at the end we compare your score with the pass mark and show your weakest units.
- Exam code
- ICGB
- Exam language
- English
- Number of questions
- 100 questions Source
- Exam time
- 180 minutes Source
- Pass mark
- 70% Source
- Calculator
- allowed Source
- Exam fee
- USD 350 (IASSC website) Source
- Results
- Within 2 business days after your answers are officially submitted, according to PeopleCert Source
- Validity
- Current for three years, then a recertification exam (50 questions in 90 minutes, 70% to pass) Source
Last verified: 2026-11-10
How to register
- Buy an IASSC Green Belt (ICGB) exam voucher from the IASSC website (USD 350 when checked) or from PeopleCert; it arrives by email with booking instructions.
- Book your exam by following the voucher instructions: online with a live proctor in as little as 72 hours at no extra cost, or sooner for a fee, or at a test centre or accredited training provider.
- Bring a standard or scientific non-programmable calculator (online exams have one built in), and do not bring the Reference Document; it is provided inside the exam.
- Sit the exam: 100 questions in 180 minutes with a 70% pass mark; PeopleCert says results come within 2 business days.
Exam body
International Association for Six Sigma Certification (IASSC), delivered by PeopleCert: Official website: International Association for Six Sigma Certification (IASSC), delivered by PeopleCert
Study guides
Frequently asked questions
How many questions are there and how long is the exam?
100 multiple-choice questions in 180 minutes according to PeopleCert's syllabus, and some forms may add up to 10 unscored questions. The syllabus allows an extra 45 minutes for non-native speakers.
Can I try IASSC Green Belt questions for free?
Yes. Free questions: a 10-question diagnostic test covering the main units, no sign-up; at the end we compare your score with the pass mark and show your weakest units. The free practice test page lists the same questions with answers and an explanation for every option. The rest of the questions and the full mock exams come with a pass from SAR 26.
What makes this IASSC Green Belt question bank different?
Question bank: full mock exams of 100 questions in 180 minutes, like the real test with a result for every unit, plus 577 explained questions across 5 units, every option explained, a review of your mistakes, and two ways to practise: see the answer right away, or sit a full timed mock. Practice questions and explanations are ready to use on your phone. Try the free questions and read the explanations before buying full access.
What is the pass mark?
70%, which is 70 out of 100.
Which phase is the largest?
Measure with about 32 questions, then Analyze with about 22, Define and Control with about 19 each, and Improve with about 8, according to the syllabus test specification.
Are calculators and formula sheets allowed?
Yes to a standard or scientific non-programmable calculator, and online exams have one built in. Formulas and tables are in the IASSC Reference Document provided inside the exam; you may not bring your own copy.
Can I take the exam in Arabic?
PeopleCert says the exam is offered in four languages and we did not find Arabic among them when we checked, so our questions are shown in English, as in the exam, with an Arabic translation and explanations.
How much is the exam voucher?
It showed as USD 350 on the IASSC website and USD 402 on the PeopleCert website on the day we checked. Go by the price shown at checkout.
How long is the certification valid?
Three years. To keep it, you take the recertification exam (50 questions in 90 minutes), according to PeopleCert.
Is this website affiliated with an official body?
No. This is an independent website, not affiliated with IASSC, PeopleCert or any government agency; scores are for practice only.
Is this an official site, and how do I pay?
It is an independent site, not part of Qiyas, this exam's regulator or any government body, with practice questions and answer explanations. You pay once, with no automatic renewal, through Waffo Pancake (the merchant of record) by Visa, Mastercard, Apple Pay or Google Pay, and your statement shows "WAFFO". If you were charged twice or the pass did not open, email support@saudiexams.com.
Study material sample: Define Phase
Summary
Define is about 19 of the 100 questions in the test specification of the IASSC Green Belt syllabus. It has four topics: the basics of Six Sigma, covering its meanings and history, project deliverables, Y = f(X), the voices of the customer, business and employee, and the roles (1.1); the fundamentals, covering defining a process, Critical to Quality characteristics (CTQs), the cost of poor quality (COPQ), Pareto analysis and the metrics DPU, DPMO, FTY, RTY and cycle time (1.2); selecting projects, covering the business case and project charter, project metrics, financial evaluation and benefits capture (1.3); and the Lean enterprise, covering Lean's history, how it combines with Six Sigma, the seven elements of waste and 5S (1.4). Expect definitions, short calculations and project situations.
What the exam focuses on · Common traps · Try the flashcards
What the exam focuses on
- Six Sigma as a metric (about 3.4 DPMO with the 1.5 sigma shift), a problem-solving method (DMAIC) and a management philosophy focused on reducing variation (1.1.1).
- The deliverables at each tollgate: charter and SIPOC in Define; a validated measurement system, baseline and current capability in Measure; root causes verified with data in Analyze; a piloted solution in Improve; a control plan and handover in Control (1.1.3).
- Y = f(X): the output Y is a result of the inputs X, so controlling the critical Xs controls Y (1.1.4).
Show 5 more
- The voice of the customer (VOC), of the business (VOB) and of the employee (VOE), and how CTQs are derived from the VOC (1.1.5, 1.2.2).
- Roles: the Champion, Black Belt, Green Belt, process owner and team members, and who owns the process after the project closes (1.1.6).
- Calculating and reading DPU, DPMO, FTY and RTY (1.2.5).
- Charter elements: business case, problem statement, goal statement, scope, team and milestones, with the primary and secondary (consequential) metrics (1.3.1, 1.3.2).
- The seven elements of waste and the 5S steps, and how Lean supports speed and flow while Six Sigma reduces variation (1.4.3 to 1.4.5).
Common traps
- Mixing up FTY and RTY: each step's yield can look high, but RTY multiplies the step yields and shows the real chance of passing every step first time.
- Mixing up DPU and DPMO: DPMO divides by the number of opportunities, so changing the opportunities per unit changes DPMO but not DPU.
- Forgetting that the 3.4 DPMO figure assumes a long-term shift of 1.5 sigma.
Show 4 more
- Reporting freed time that has not been redeployed as a hard saving; it is a soft benefit until it shows in the financial results.
- Ranking a Pareto chart by count alone when the categories cost different amounts; redraw it by cost.
- Confusing the wastes: rework is Correction, moving materials is Conveyance, and people moving is Motion.
- Pulling problems outside the charter scope into the current project; the better move is to propose them as separate projects.
Try the flashcards
Tap a card to see the answer
What does σ stand for in Six Sigma?
The process standard deviation.
What is Y in Y = f(X)?
The output or result the project wants to improve.
How is RTY calculated?
By multiplying the first-time yields of the steps.
How many DPMO correspond to six sigma?
About 3.4, with the 1.5 sigma shift.
What does DPMO divide by that DPU does not?
The number of opportunities per unit.
What is the business case in a charter for?
To explain why the project matters to the organisation now.
What is a consequential (secondary) metric?
A measure watched so the improvement does not harm other areas.
Which waste is rework?
Correction.
Why you can trust these questions
- Published questions: 577. Read the explanations and references, and report any error from the question.
- Exam facts last checked against the organiser’s website: 2026-11-10. We check them again every three months and two weeks before each test.
- Found a mistake? Tap "Report an error" under any question in the practice area, or email us at support@saudiexams.com
- Independent website. Not affiliated with ETEC (Qiyas), the Financial Academy or any government body.