ICYB IASSC Certified Lean Six Sigma Y… Practice Tests (2026)

What topics are on the IASSC Certified Lean Six Sigma Yellow Belt exam?

The IASSC Certified Lean Six Sigma Yellow Belt exam is organized into 3 domains. The highest‑weight domains are Define Phase and Measure Phase.

Use the official exam objectives and guides below to confirm the latest version and topic coverage:

Official IASSC Certified Lean Six Sigma Yellow Belt exam guide Certification Page Body Of Knowledge Pdf Sample Questions Url

Define Phase 40%

1.1

The Basics of Six Sigma

6 subtopics

1.1.1Meanings of Six Sigma

1.1.2General History of Six Sigma & Continuous Improvement

1.1.3Deliverables of a Lean Six Sigma Project

1.1.4The Problem Solving Strategy Y = f(x)

1.1.5Voice of the Customer, Business and Employee

1.1.6Six Sigma Roles & Responsibilities

Learning Objectives

Understand the fundamental concepts of Six Sigma
Recognize the history and evolution of Six Sigma
Identify project deliverables and stakeholder requirements

1.2

The Fundamentals of Six Sigma

5 subtopics

1.2.1Defining a Process

1.2.2Critical to Quality Characteristics (CTQ's)

1.2.3Cost of Poor Quality (COPQ)

1.2.4Pareto Analysis (80:20 rule)

1.2.5Basic Six Sigma Metrics

Learning Objectives

Master fundamental Six Sigma concepts and metrics
Understand process definition and CTQs
Calculate and interpret basic Six Sigma metrics

1.3

Selecting Lean Six Sigma Projects

3 subtopics

1.3.1Building a Business Case & Project Charter

1.3.2Developing Project Metrics

1.3.3Financial Evaluation & Benefits Capture

Learning Objectives

Understand project selection criteria
Develop effective project charters
Evaluate financial benefits of projects

1.4

The Lean Enterprise

5 subtopics

1.4.1Understanding Lean

1.4.2The History of Lean

1.4.3Lean & Six Sigma

1.4.4The Seven Elements of Waste

1.4.55S

Learning Objectives

Master Lean principles and concepts
Identify and eliminate seven wastes
Understand 5S methodology

Domain Hands-on Skills

Creating project chartersIdentifying CTQsCalculating basic metricsRecognizing wasteImplementing 5S

Common Mistakes to Avoid

Confusing different types of waste
Miscalculating Six Sigma metrics
Incomplete project charter elements
Not understanding Y = f(x) relationship

Measure Phase 40%

Control Phase 20%

How do I earn the IASSC Certified Lean Six Sigma Yellow Belt certification?

Official Pathway Guidance

Track: Lean Six Sigma

Next Steps

ICGBIASSC Certified Lean Six Sigma Green Belt
Next level in Lean Six Sigma hierarchy
ICBBIASSC Certified Lean Six Sigma Black Belt
Advanced level (can skip Green Belt)

Current Level

ICYBIASSC Certified Lean Six Sigma Yellow BeltFoundation

Alternative Paths

ASQ-CSSYBASQ Certified Six Sigma Yellow Belt
CLSSYBCouncil for Six Sigma Certification Yellow Belt

Complementary Certifications

Career Progression

Entry Level

Certification:IASSC Yellow Belt (ICYB)
Typical Roles:Team Member, Quality Analyst, Process Assistant
Years Experience:0-2 years

Intermediate

Certification:IASSC Green Belt (ICGB)
Typical Roles:Process Improvement Specialist, Quality Engineer, Project Lead
Years Experience:2-5 years

Advanced

Certification:IASSC Black Belt (ICBB)
Typical Roles:Six Sigma Black Belt, Quality Manager, Process Excellence Lead
Years Experience:5+ years

Expert

Certification:Master Black Belt (various vendors)
Typical Roles:Master Black Belt, Director of Quality, VP Process Excellence
Years Experience:10+ years

Certification Maintenance

Recertification Options:
Pass recertification exam every 3 yearsSubmit continuing education unitsDocument professional development activitiesMaintain active involvement in Lean Six Sigma projects

What should I study for the IASSC Certified Lean Six Sigma Yellow Belt exam?

Use the official resources and study materials below to prepare for the IASSC Certified Lean Six Sigma Yellow Belt.

Practice the IASSC Certified Lean Six Sigma Yellow Belt with our Exam Simulator

Free practice questions, exam guides, and real exam‑style explanations in our Planet Cert simulator.

Official Resources

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Free Resources

https://asq.org/quality-resourcesarticles_and_tools https://www.isixsigma.com/community_forum https://www.lean.org/lean_resources https://www.youtube.com/user/GembaAcademyvideo_tutorials

Study Tips

Tip: Focus on understanding concepts rather than memorization; Priority: high
Tip: Practice metric calculations (DPU, DPMO, RTY, FTY); Priority: high
Tip: Master the seven wastes and 5S methodology; Priority: high
Tip: Understand when to use each tool (SIPOC, Fishbone, Pareto); Priority: medium
Tip: Review basic statistics thoroughly; Priority: medium
Tip: Take multiple practice exams to build confidence; Priority: high

What's changed on the IASSC Certified Lean Six Sigma Yellow Belt exam in 2026?

This section summarizes what’s changed for the IASSC Certified Lean Six Sigma Yellow Belt and the current exam status (ACTIVE).

Official Links & References

The Future of Six Sigma

IASSC Certification Roadmap

Lean Six Sigma in the Digital Age

Technology Coverage

Statistical SoftwareMinitab 21

Enhanced statistical analysis capabilities relevant to Yellow Belt practitioners

Released: 2024-03-01

Process Mapping ToolsVarious cloud-based tools

Digital process mapping replacing traditional methods

Released: 2024-ongoing

Industry Trends

Integration of AI/ML in quality management becoming standard
Remote and hybrid work driving need for digital Six Sigma tools
Sustainability metrics increasingly important in process improvement
Cross-functional Six Sigma applications beyond manufacturing
Micro-learning and bite-sized certification preparation gaining popularity

Who should take the IASSC Certified Lean Six Sigma Yellow Belt exam?

The IASSC Certified Lean Six Sigma Yellow Belt is designed for Quality team members and related roles.

Recommended Experience

Lean Six Sigma training from qualified institution
Understanding of basic statistics
Experience with process improvement
Familiarity with quality management concepts

Target Audience

Quality team members
Process improvement team members
Entry-level professionals
Support staff in improvement projects
Individuals seeking foundational Lean Six Sigma knowledge

Experience Level: Entry-level

How much does the IASSC Certified Lean Six Sigma Yellow Belt cost?

The official exam fee for the IASSC Certified Lean Six Sigma Yellow Belt is $250 USD.

Exam Cost	$250 USD
Scheduling	Official exam scheduling page
Testing Centers	Pearson VUE (8,000+ locations in 165 countries), PeopleCert Online Proctoring, IASSC Accredited Providers
Online Proctoring	Available

How long is the IASSC Certified Lean Six Sigma Yellow Belt certification valid?

The IASSC Certified Lean Six Sigma Yellow Belt certification is typically valid for Perpetual with Current Status for 3 years (see renewal options below).

Valid For	Perpetual with Current Status for 3 years
Recertification	Recertification required every 3 years to maintain 'Current' status Pass a recertification exam Submit continuing education credits Complete professional development activities

IASSC Certified Lean Six Sigma Yellow Belt

What's Included

Complete Exam Package

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Exam Details

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What topics are on the IASSC Certified Lean Six Sigma Yellow Belt exam?

Define Phase 40%

The Basics of Six Sigma

The Fundamentals of Six Sigma

Selecting Lean Six Sigma Projects

The Lean Enterprise

Domain Hands-on Skills

Common Mistakes to Avoid

Measure Phase 40%

Control Phase 20%

How do I earn the IASSC Certified Lean Six Sigma Yellow Belt certification?

Official Pathway Guidance

Next Steps

Current Level

Alternative Paths

Complementary Certifications

Career Progression

Entry Level

Intermediate

Advanced

Expert

Certification Maintenance

What should I study for the IASSC Certified Lean Six Sigma Yellow Belt exam?

Practice the IASSC Certified Lean Six Sigma Yellow Belt with our Exam Simulator

Official Resources

Free Resources

Study Tips

What's changed on the IASSC Certified Lean Six Sigma Yellow Belt exam in 2026?

Official Links & References

Technology Coverage

Industry Trends

Who should take the IASSC Certified Lean Six Sigma Yellow Belt exam?

Recommended Experience

Target Audience

How much does the IASSC Certified Lean Six Sigma Yellow Belt cost?

How long is the IASSC Certified Lean Six Sigma Yellow Belt certification valid?

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