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100+ Free APMG LSS Yellow Belt Practice Questions

Pass your APMG/LSSA Lean Six Sigma Yellow Belt (Foundation) exam on the first try — instant access, no signup required.

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Key Facts: APMG LSS Yellow Belt Exam

50

multiple-choice questions in 60 minutes

LSSA official exam page (shop.lssa.eu)

64%

pass mark (32 of 50 correct)

LSSA official exam page

EUR 260

exam fee (LSSA voucher)

LSSA official exam shop

Open-book

exam format — up to 2 reference books and a basic calculator permitted

LSSA official exam page

3.4

defects per million opportunities (DPMO) at Six Sigma quality level

LSSA body of knowledge / Six Sigma methodology

APMG/LSSA Lean Six Sigma Yellow Belt is a 50-question, 60-minute, open-book MCQ exam with a 64% pass mark (32/50). It is the entry level of the LSSA hierarchy (accredited by APMG International) and covers Lean principles, DMAIC overview, 8 wastes, 5S, VoC/CTQ, and introductory statistics. Distinct from the IASSC Yellow Belt scheme.

Sample APMG LSS Yellow Belt Practice Questions

Try these sample questions to test your APMG LSS Yellow Belt exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Lean Six Sigma combines two distinct methodologies. Which statement best describes the core purpose of combining them?
A.Lean eliminates waste to increase flow speed, while Six Sigma reduces variation to improve quality — together they produce faster and more consistent processes
B.Lean focuses on statistical analysis, while Six Sigma focuses on workplace organisation
C.Both methodologies address the same problems and are combined only to reduce training time
D.Lean is a Japanese concept and Six Sigma is American, so combining them creates a global standard
Explanation: Lean targets waste (non-value-adding activity) to speed up flow, while Six Sigma uses statistical tools to reduce process variation and defects. The LSSA body of knowledge positions the combination as complementary: leaner processes reduce cost, and lower variation improves quality and customer satisfaction simultaneously.
2Six Sigma was developed as a quality initiative at which organisation in the 1980s?
A.Motorola
B.Toyota Motor Corporation
C.General Electric
D.Ford Motor Company
Explanation: Six Sigma was created at Motorola in the mid-1980s by engineer Bill Smith and championed by CEO Bob Galvin, who set the goal of reducing defects to near-zero. Motorola won the Malcolm Baldrige National Quality Award in 1988, partly due to Six Sigma.
3The Toyota Production System (TPS) is considered the primary origin of Lean thinking. Which two foundational pillars support TPS?
A.Just-in-Time and Jidoka
B.DMAIC and PDCA
C.5S and Six Sigma
D.Kaizen and Kanban
Explanation: TPS rests on two pillars: Just-in-Time (producing exactly what is needed, when needed, in the amount needed) and Jidoka (built-in quality — stopping the process automatically when a defect is detected). These pillars underpin all Lean tools.
4In the LSSA Lean Six Sigma belt hierarchy, which belt level is responsible for leading and coaching Black Belts and owning the organisation's overall improvement strategy?
A.Green Belt
B.Black Belt
C.Master Black Belt
D.Yellow Belt
Explanation: The Master Black Belt (MBB) is the highest technical and coaching level in the LSSA belt hierarchy. MBBs mentor Black Belts and Green Belts, design the Lean Six Sigma deployment strategy, and develop the organisation's capability for sustained improvement.
5A Yellow Belt practitioner's primary role on a Lean Six Sigma project is to:
A.Approve the project charter and release resources
B.Lead statistical data analysis and hypothesis testing
C.Support the project team, participate in kaizen events, and apply basic Lean Six Sigma tools in their own work area
D.Manage the full project from Define through Control with cross-functional authority
Explanation: Yellow Belts typically work within their own department or work area, participate in improvement events, collect data, and apply foundational tools such as 5S and process mapping. They support Green and Black Belt–led projects rather than leading complex cross-functional initiatives.
6The DMAIC improvement cycle stands for:
A.Define, Measure, Analyse, Improve, Control
B.Design, Manage, Analyse, Implement, Check
C.Detect, Map, Assess, Improve, Close
D.Define, Model, Assign, Investigate, Control
Explanation: DMAIC is the structured problem-solving framework at the heart of Six Sigma: Define the problem and scope, Measure current performance, Analyse root causes, Improve by implementing solutions, and Control to sustain the gains.
7During the Define phase of DMAIC, the team creates a project charter. What is the primary purpose of the project charter?
A.To record all data collected during the Measure phase
B.To list corrective actions taken during the Control phase
C.To formally scope the problem, agree on goals, assign team roles, and authorise the project
D.To detail every statistical test the team will use in the Analyse phase
Explanation: The project charter is the Define phase deliverable that establishes the problem statement, goal statement, scope boundaries, team roles, and business case. It serves as the authorising document that aligns the sponsor, team, and stakeholders before work begins.
8A team in the Measure phase finds that a critical output measurement varies widely depending on who takes the reading. This most likely indicates a problem with:
A.Measurement system repeatability and reproducibility (R&R)
B.Product design
C.Supplier quality
D.The process control plan
Explanation: When measurement results vary by operator, the measurement system itself contributes unacceptable variation (poor reproducibility). A Gauge R&R study quantifies how much of total observed variation comes from the measuring process versus the actual process, allowing the team to trust or fix the measurement before drawing conclusions.
9The Analyse phase of DMAIC is focused on identifying:
A.The root cause or causes of the problem
B.The best solution to implement immediately
C.The control charts to sustain process performance
D.The budget required for the improvement project
Explanation: The Analyse phase uses tools such as fishbone (Ishikawa) diagrams, 5 Whys, and data analysis to move from symptom to verified root cause. Teams must confirm root causes with data before moving to Improve, otherwise solutions risk addressing the wrong problem.
10Which tool is MOST commonly used in the Control phase of DMAIC to detect when a process has shifted out of its normal operating range?
A.SIPOC diagram
B.Fishbone (Ishikawa) diagram
C.Control chart (SPC chart)
D.Affinity diagram
Explanation: A control chart (Statistical Process Control chart) plots process data over time with control limits derived from the process's own variation. It provides an ongoing signal when the process shifts or becomes unstable, enabling operators to react before defects accumulate.

About the APMG LSS Yellow Belt Exam

The APMG/LSSA Lean Six Sigma Yellow Belt is the entry-level certification in the LSSA belt hierarchy, delivered internationally through APMG International as the exam accreditation body. The Yellow Belt exam is a 60-minute, 50-question open-book multiple-choice assessment aligned to the LSSA body of knowledge (NEN-LSSA standard). Content covers Lean and Six Sigma principles and history, the DMAIC improvement framework, VoC and CTQ, the eight wastes (muda), mura, muri, 5S, visual management, standard work, kaizen, PDCA, basic data types and statistics, and the belt hierarchy. This is the LSSA/APMG scheme — it is distinct from the IASSC belt scheme.

Assessment

50 compulsory multiple-choice questions; four answer options per question; open-book (up to 2 reference books); basic calculator permitted

Time Limit

60 minutes

Passing Score

32 out of 50 correct answers (64%)

Exam Fee

EUR 260.00 for the LSSA exam voucher; APMG-channel pricing varies by region and training provider (APMG International (accreditation body) / Lean Six Sigma Academy LSSA B.V. (exam and body of knowledge owner))

APMG LSS Yellow Belt Exam Content Outline

~40%

DMAIC Improvement Cycle and Process Mapping

All five DMAIC phases — Define (project charter, SIPOC), Measure (data collection, measurement systems), Analyse (root cause analysis, 5 Whys, fishbone, Pareto), Improve (solution selection, pilot, kaizen), and Control (control plans, SPC) — plus PDCA, value stream mapping, and process flowcharting.

~20%

Lean Principles, Waste, Muda, Mura, and Muri

The eight types of muda, mura (unevenness), muri (overburden), the Toyota Production System foundations (Just-in-Time and Jidoka), Lean's five principles, takt time, pull systems, kanban, and heijunka.

~15%

5S, Visual Management, Standard Work, and Kaizen

All five S steps (Sort, Straighten, Shine, Standardise, Sustain), red-tagging, visual management tools (andon, shadow boards, colour zones), standard work purpose and maintenance, poka-yoke, kaizen events, and TPM.

~15%

Voice of the Customer, CTQ, and Lean Six Sigma History

VoC definition and collection methods, CTQ tree, translating VoC to measurable specifications, QFD/House of Quality awareness, Six Sigma origins at Motorola, TPS and Toyota, and the LSSA framework levels.

~10%

Basic Data Types, Statistics, and Process Performance

Continuous vs attribute data, ordinal vs nominal, mean, median, mode, standard deviation, normal distribution and empirical rule, DPMO calculation, sigma levels, process capability (Cp/Cpk), scatter diagrams, and common vs special cause variation.

How to Pass the APMG LSS Yellow Belt Exam

What You Need to Know

  • Passing score: 32 out of 50 correct answers (64%)
  • Assessment: 50 compulsory multiple-choice questions; four answer options per question; open-book (up to 2 reference books); basic calculator permitted
  • Time limit: 60 minutes
  • Exam fee: EUR 260.00 for the LSSA exam voucher; APMG-channel pricing varies by region and training provider

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

APMG LSS Yellow Belt Study Tips from Top Performers

1Master the eight types of muda with real-world examples — exam questions frequently describe a scenario and ask you to identify which waste category it represents.
2Know every 5S step by name and what activity belongs to each; common wrong answers swap Sort with Shine or Standardise with Sustain.
3Understand the difference between muda, mura, and muri with a concrete example for each — they are often tested together in the same question.
4Memorise the DMAIC phase purposes so you can correctly assign a tool or activity to the right phase; confusing Define with Analyse or Improve with Control is the most common mistake.
5Practice the DPMO formula (defects ÷ (units × opportunities) × 1,000,000) and the empirical rule (±1σ = 68%, ±2σ = 95%, ±3σ = 99.7%) — both appear in calculation questions on the exam.

Frequently Asked Questions

How many questions are on the LSSA/APMG Yellow Belt exam and how long is it?

The LSSA Lean Six Sigma Yellow Belt exam has 50 multiple-choice questions and a 60-minute time limit. It is an open-book exam; candidates may bring up to 2 reference books and use a basic calculator.

What score do I need to pass the LSSA Yellow Belt exam?

A minimum of 32 correct answers out of 50 is required, equivalent to a 64% pass mark.

Is the LSSA/APMG Yellow Belt the same as the IASSC Yellow Belt?

No. The LSSA/APMG scheme and the IASSC scheme are entirely separate certification programmes with different bodies of knowledge, exam formats, and accreditation bodies. Candidates should prepare specifically for the scheme they are taking.

Do I need any prior experience or training to sit the LSSA Yellow Belt exam?

There are no formal prerequisites. The LSSA Yellow Belt is an entry-level certification open to anyone. LSSA recommends their e-learning programme (approximately 16 hours) or a 2-day classroom course, but self-study is also a valid preparation route.

What topics does the LSSA Yellow Belt exam cover?

The exam covers Lean and Six Sigma history and principles, DMAIC phases, VoC and CTQ, the 8 wastes (muda), mura, muri, value stream mapping, 5S, visual management, standard work, kaizen, PDCA, basic data types and statistics (mean, median, standard deviation, normal distribution, DPMO), and the belt hierarchy from White Belt through Master Black Belt.

How much does the LSSA Yellow Belt exam cost?

The LSSA exam voucher is priced at EUR 260.00 (via shop.lssa.eu). Pricing through APMG International accredited training providers varies by region and may be bundled with a training course.