LEAN SIX SIGMA YELLOW BELT EXAM QUESTIONS
AND CORRECT ANSWERS (VERIFIED ANSWERS)
Q&A 2026/2027 |INSTANT DOWNLOAD PDF
1. What is the primary goal of Lean Six Sigma?
A. Increase employee workload
B. Eliminate all employees from processes
C. Improve process performance by reducing waste and
variation
D. Increase inventory levels
Rationale: Lean focuses on waste reduction, while Six Sigma
focuses on reducing variation and defects. Together they
improve process performance.
Correct answer: C. Improve process performance by reducing
waste and variation
2. Which methodology combines Lean principles with Six
Sigma techniques?
A. Kaizen
B. Lean Six Sigma
C. ISO 9001
D. 5S
,Rationale: Lean Six Sigma integrates Lean's waste-reduction
principles with Six Sigma's data-driven approach to variation
and defect reduction.
Correct answer: B. Lean Six Sigma
3. What does DMAIC stand for?
A. Define, Measure, Analyze, Improve, Control
B. Design, Measure, Analyze, Inspect, Control
C. Define, Manage, Analyze, Improve, Check
D. Develop, Measure, Assess, Improve, Control
Rationale: DMAIC is the standard Six Sigma improvement
methodology for improving existing processes.
Correct answer: A. Define, Measure, Analyze, Improve, Control
4. Which DMAIC phase identifies the problem and establishes
the project purpose?
A. Measure
B. Analyze
C. Define
D. Control
Rationale: The Define phase establishes the problem
statement, project scope, objectives, customers, and business
case.
,Correct answer: C. Define
5. Which phase determines the current performance of a
process?
A. Define
B. Measure
C. Improve
D. Control
Rationale: The Measure phase establishes baseline
performance using reliable process data.
Correct answer: B. Measure
6. Which DMAIC phase identifies the root causes of process
problems?
A. Analyze
B. Define
C. Control
D. Improve
Rationale: During Analyze, the team examines data and
investigates relationships and root causes.
Correct answer: A. Analyze
7. What is the primary purpose of the Improve phase?
, A. Document the original process only
B. Develop and implement solutions
C. Define customers
D. Collect baseline data
Rationale: Improve focuses on developing, testing, and
implementing solutions that address verified root causes.
Correct answer: B. Develop and implement solutions
8. What is the primary purpose of the Control phase?
A. Identify customers
B. Maintain improvements over time
C. Brainstorm initial ideas
D. Define the project charter
Rationale: Control ensures that process improvements are
sustained and monitored.
Correct answer: B. Maintain improvements over time
9. Which Lean concept focuses on identifying activities that do
not add value?
A. Waste elimination
B. Benchmarking
C. Regression
D. Sampling
AND CORRECT ANSWERS (VERIFIED ANSWERS)
Q&A 2026/2027 |INSTANT DOWNLOAD PDF
1. What is the primary goal of Lean Six Sigma?
A. Increase employee workload
B. Eliminate all employees from processes
C. Improve process performance by reducing waste and
variation
D. Increase inventory levels
Rationale: Lean focuses on waste reduction, while Six Sigma
focuses on reducing variation and defects. Together they
improve process performance.
Correct answer: C. Improve process performance by reducing
waste and variation
2. Which methodology combines Lean principles with Six
Sigma techniques?
A. Kaizen
B. Lean Six Sigma
C. ISO 9001
D. 5S
,Rationale: Lean Six Sigma integrates Lean's waste-reduction
principles with Six Sigma's data-driven approach to variation
and defect reduction.
Correct answer: B. Lean Six Sigma
3. What does DMAIC stand for?
A. Define, Measure, Analyze, Improve, Control
B. Design, Measure, Analyze, Inspect, Control
C. Define, Manage, Analyze, Improve, Check
D. Develop, Measure, Assess, Improve, Control
Rationale: DMAIC is the standard Six Sigma improvement
methodology for improving existing processes.
Correct answer: A. Define, Measure, Analyze, Improve, Control
4. Which DMAIC phase identifies the problem and establishes
the project purpose?
A. Measure
B. Analyze
C. Define
D. Control
Rationale: The Define phase establishes the problem
statement, project scope, objectives, customers, and business
case.
,Correct answer: C. Define
5. Which phase determines the current performance of a
process?
A. Define
B. Measure
C. Improve
D. Control
Rationale: The Measure phase establishes baseline
performance using reliable process data.
Correct answer: B. Measure
6. Which DMAIC phase identifies the root causes of process
problems?
A. Analyze
B. Define
C. Control
D. Improve
Rationale: During Analyze, the team examines data and
investigates relationships and root causes.
Correct answer: A. Analyze
7. What is the primary purpose of the Improve phase?
, A. Document the original process only
B. Develop and implement solutions
C. Define customers
D. Collect baseline data
Rationale: Improve focuses on developing, testing, and
implementing solutions that address verified root causes.
Correct answer: B. Develop and implement solutions
8. What is the primary purpose of the Control phase?
A. Identify customers
B. Maintain improvements over time
C. Brainstorm initial ideas
D. Define the project charter
Rationale: Control ensures that process improvements are
sustained and monitored.
Correct answer: B. Maintain improvements over time
9. Which Lean concept focuses on identifying activities that do
not add value?
A. Waste elimination
B. Benchmarking
C. Regression
D. Sampling
