Lean Six Sigma Yellow Belt Certification
Exam Practice Questions And Correct
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Rationale 2026 Q&A| Instant Download
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1. What is the primary purpose of Lean Six Sigma methodology in an
organization?
A. Increasing employee workload
B. Eliminating all production systems
C. Reducing waste and variation while improving processes
D. Replacing managers with automation
Answer: C. Reducing waste and variation while improving processes
Lean Six Sigma combines Lean waste reduction principles with Six Sigma
variation reduction methods to improve quality, efficiency, and customer
satisfaction.
2. Which Lean Six Sigma phase focuses on clearly defining the problem,
project goals, and customer requirements?
A. Measure
B. Define
C. Analyze
D. Improve
,Answer: B. Define
The Define phase establishes the project purpose, scope, stakeholders, and
critical customer needs before data collection begins.
3. What does the acronym DMAIC represent?
A. Define, Measure, Analyze, Improve, Control
B. Develop, Manage, Inspect, Apply, Confirm
C. Design, Monitor, Improve, Analyze, Calculate
D. Define, Modify, Implement, Assess, Correct
Answer: A. Define, Measure, Analyze, Improve, Control
DMAIC is the structured Six Sigma improvement cycle used for solving
existing process problems.
4. In Lean Six Sigma, what is considered waste?
A. Any activity that consumes resources without adding customer
value
B. Any employee training activity
C. Any improvement project
D. Any customer request
Answer: A. Any activity that consumes resources without adding customer
value
Lean identifies waste as activities that use time, money, or resources
without creating value for the customer.
5. Which Lean principle focuses on creating smooth workflow?
A. Flow
B. Inspection
C. Variation
D. Documentation
Answer: A. Flow
Flow involves arranging processes so products or services move efficiently
without unnecessary delays.
, 6. What is the role of a Yellow Belt in Lean Six Sigma?
A. Leading every enterprise-wide transformation
B. Supporting improvement projects and applying basic tools
C. Approving financial investments only
D. Replacing Black Belts
Answer: B. Supporting improvement projects and applying basic tools
Yellow Belts understand Lean Six Sigma fundamentals and contribute data,
analysis, and improvement support.
7. Which tool is commonly used to identify possible causes of a problem?
A. Fishbone diagram
B. Control chart
C. Histogram
D. Run chart
Answer: A. Fishbone diagram
The fishbone diagram organizes potential root causes into categories to
support cause analysis.
8. What does VOC stand for in Lean Six Sigma?
A. Value of Control
B. Voice of Customer
C. Variation of Control
D. Vision of Company
Answer: B. Voice of Customer
VOC captures customer expectations and requirements that guide process
improvements.
9. Which metric measures defects compared with opportunities?
A. DPMO
B. ROI
C. Cycle time
D. takt time
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. What is the primary purpose of Lean Six Sigma methodology in an
organization?
A. Increasing employee workload
B. Eliminating all production systems
C. Reducing waste and variation while improving processes
D. Replacing managers with automation
Answer: C. Reducing waste and variation while improving processes
Lean Six Sigma combines Lean waste reduction principles with Six Sigma
variation reduction methods to improve quality, efficiency, and customer
satisfaction.
2. Which Lean Six Sigma phase focuses on clearly defining the problem,
project goals, and customer requirements?
A. Measure
B. Define
C. Analyze
D. Improve
,Answer: B. Define
The Define phase establishes the project purpose, scope, stakeholders, and
critical customer needs before data collection begins.
3. What does the acronym DMAIC represent?
A. Define, Measure, Analyze, Improve, Control
B. Develop, Manage, Inspect, Apply, Confirm
C. Design, Monitor, Improve, Analyze, Calculate
D. Define, Modify, Implement, Assess, Correct
Answer: A. Define, Measure, Analyze, Improve, Control
DMAIC is the structured Six Sigma improvement cycle used for solving
existing process problems.
4. In Lean Six Sigma, what is considered waste?
A. Any activity that consumes resources without adding customer
value
B. Any employee training activity
C. Any improvement project
D. Any customer request
Answer: A. Any activity that consumes resources without adding customer
value
Lean identifies waste as activities that use time, money, or resources
without creating value for the customer.
5. Which Lean principle focuses on creating smooth workflow?
A. Flow
B. Inspection
C. Variation
D. Documentation
Answer: A. Flow
Flow involves arranging processes so products or services move efficiently
without unnecessary delays.
, 6. What is the role of a Yellow Belt in Lean Six Sigma?
A. Leading every enterprise-wide transformation
B. Supporting improvement projects and applying basic tools
C. Approving financial investments only
D. Replacing Black Belts
Answer: B. Supporting improvement projects and applying basic tools
Yellow Belts understand Lean Six Sigma fundamentals and contribute data,
analysis, and improvement support.
7. Which tool is commonly used to identify possible causes of a problem?
A. Fishbone diagram
B. Control chart
C. Histogram
D. Run chart
Answer: A. Fishbone diagram
The fishbone diagram organizes potential root causes into categories to
support cause analysis.
8. What does VOC stand for in Lean Six Sigma?
A. Value of Control
B. Voice of Customer
C. Variation of Control
D. Vision of Company
Answer: B. Voice of Customer
VOC captures customer expectations and requirements that guide process
improvements.
9. Which metric measures defects compared with opportunities?
A. DPMO
B. ROI
C. Cycle time
D. takt time
