Lean Six Sigma Green Belt Quality Management Certification
Exam | Comprehensive QUESTION Bank, Most Tested
QUESTIONs & Detailed Rationales 2026/2027
QUESTION 1
Who is credited with introducing the "System of Profound Knowledge"
and the famous 14 Points for Management to improve quality and
productivity?
• A. Philip Crosby
• B. W. Edwards Deming
• C. Genichi Taguchi
• D. Armand Feigenbaum
Correct Answer: B. W. Edwards Deming
Detailed Rationale: Deming emphasized that quality requires a systemic
approach involving appreciation for a system, knowledge of variation,
theory of knowledge, and psychology.
QUESTION 2
What are the three core components of the Juran Trilogy, developed by
Joseph Juran?
• A. Define, Measure, Analyze
• B. Quality Planning, Quality Control, Quality Improvement
• C. Prevention, Appraisal, Failure
• D. Sort, Set in Order, Shine
,Correct Answer: B. Quality Planning, Quality Control, Quality
Improvement
Detailed Rationale: The Juran Trilogy provides a universal framework
for managing quality, shifting focus from operational control to
continuous breakthrough improvement.
QUESTION 3
Which quality pioneer is most closely associated with the concept of
"Zero Defects" and the "Four Absolutes of Quality Management"?
• A. Philip Crosby
• B. Walter Shewhart
• C. Kaoru Ishikawa
• D. Shigeo Shingo
Correct Answer: A. Philip Crosby
Detailed Rationale: Crosby argued that quality is free when done right
the first time, defining quality as "conformance to requirements" rather
than elegance or goodness.
QUESTION 4
What was Armand Feigenbaum's primary contribution to quality
management?
• A. The concept of Total Quality Control (TQC), arguing that quality
is the responsibility of all departments, not just manufacturing.
• B. The creation of statistical control charts.
• C. The invention of the 5S methodology.
, • D. The formalization of Design of Experiments (DOE).
Correct Answer: A. The concept of Total Quality Control (TQC), arguing
that quality is the responsibility of all departments, not just
manufacturing.
Detailed Rationale: Feigenbaum advocated that organization-wide
control is necessary because quality is influenced by marketing,
engineering, production, and service functions.
QUESTION 5
What major contribution did Kaoru Ishikawa make to the field of quality
management?
• A. The invention of the Cause-and-Effect (Fishbone) diagram and
the promotion of company-wide Quality Circles.
• B. The creation of the economic manufacturing quantity formula.
• C. The development of ISO 9000 quality standards.
• D. The formulation of the 8 Wastes of Lean.
Correct Answer: A. The invention of the Cause-and-Effect (Fishbone)
diagram and the promotion of company-wide Quality Circles.
Detailed Rationale: Ishikawa championed grassroots employee
involvement through Quality Circles and made advanced statistical tools
accessible to frontline workers.
QUESTION 6
How does the Taguchi Loss Function define quality loss?
• A. Loss occurs only when a product exceeds official specification
limits.
, • B. Loss is measured solely by the cost of scrap and rework.
• C. Loss is incurred whenever a product characteristic deviates
from its ideal target value, growing exponentially as variation
increases.
• D. Loss is fixed regardless of customer tolerance limits.
Correct Answer: C. Loss is incurred whenever a product characteristic
deviates from its ideal target value, growing exponentially as variation
increases.
Detailed Rationale: Taguchi challenged traditional pass/fail limits,
proving that even products within specifications incur societal and
customer loss if they drift away from the exact target.
QUESTION 7
What is the primary philosophical foundation of Total Quality
Management (TQM)?
• A. Achieving long-term organizational success through customer
satisfaction, continuous improvement, and company-wide
employee participation.
• B. Relying strictly on final product inspection by quality auditors.
• C. Minimizing employee training costs to maximize short-term
profits.
• D. Outsourcing all core manufacturing processes to third-party
vendors.
Exam | Comprehensive QUESTION Bank, Most Tested
QUESTIONs & Detailed Rationales 2026/2027
QUESTION 1
Who is credited with introducing the "System of Profound Knowledge"
and the famous 14 Points for Management to improve quality and
productivity?
• A. Philip Crosby
• B. W. Edwards Deming
• C. Genichi Taguchi
• D. Armand Feigenbaum
Correct Answer: B. W. Edwards Deming
Detailed Rationale: Deming emphasized that quality requires a systemic
approach involving appreciation for a system, knowledge of variation,
theory of knowledge, and psychology.
QUESTION 2
What are the three core components of the Juran Trilogy, developed by
Joseph Juran?
• A. Define, Measure, Analyze
• B. Quality Planning, Quality Control, Quality Improvement
• C. Prevention, Appraisal, Failure
• D. Sort, Set in Order, Shine
,Correct Answer: B. Quality Planning, Quality Control, Quality
Improvement
Detailed Rationale: The Juran Trilogy provides a universal framework
for managing quality, shifting focus from operational control to
continuous breakthrough improvement.
QUESTION 3
Which quality pioneer is most closely associated with the concept of
"Zero Defects" and the "Four Absolutes of Quality Management"?
• A. Philip Crosby
• B. Walter Shewhart
• C. Kaoru Ishikawa
• D. Shigeo Shingo
Correct Answer: A. Philip Crosby
Detailed Rationale: Crosby argued that quality is free when done right
the first time, defining quality as "conformance to requirements" rather
than elegance or goodness.
QUESTION 4
What was Armand Feigenbaum's primary contribution to quality
management?
• A. The concept of Total Quality Control (TQC), arguing that quality
is the responsibility of all departments, not just manufacturing.
• B. The creation of statistical control charts.
• C. The invention of the 5S methodology.
, • D. The formalization of Design of Experiments (DOE).
Correct Answer: A. The concept of Total Quality Control (TQC), arguing
that quality is the responsibility of all departments, not just
manufacturing.
Detailed Rationale: Feigenbaum advocated that organization-wide
control is necessary because quality is influenced by marketing,
engineering, production, and service functions.
QUESTION 5
What major contribution did Kaoru Ishikawa make to the field of quality
management?
• A. The invention of the Cause-and-Effect (Fishbone) diagram and
the promotion of company-wide Quality Circles.
• B. The creation of the economic manufacturing quantity formula.
• C. The development of ISO 9000 quality standards.
• D. The formulation of the 8 Wastes of Lean.
Correct Answer: A. The invention of the Cause-and-Effect (Fishbone)
diagram and the promotion of company-wide Quality Circles.
Detailed Rationale: Ishikawa championed grassroots employee
involvement through Quality Circles and made advanced statistical tools
accessible to frontline workers.
QUESTION 6
How does the Taguchi Loss Function define quality loss?
• A. Loss occurs only when a product exceeds official specification
limits.
, • B. Loss is measured solely by the cost of scrap and rework.
• C. Loss is incurred whenever a product characteristic deviates
from its ideal target value, growing exponentially as variation
increases.
• D. Loss is fixed regardless of customer tolerance limits.
Correct Answer: C. Loss is incurred whenever a product characteristic
deviates from its ideal target value, growing exponentially as variation
increases.
Detailed Rationale: Taguchi challenged traditional pass/fail limits,
proving that even products within specifications incur societal and
customer loss if they drift away from the exact target.
QUESTION 7
What is the primary philosophical foundation of Total Quality
Management (TQM)?
• A. Achieving long-term organizational success through customer
satisfaction, continuous improvement, and company-wide
employee participation.
• B. Relying strictly on final product inspection by quality auditors.
• C. Minimizing employee training costs to maximize short-term
profits.
• D. Outsourcing all core manufacturing processes to third-party
vendors.
