Lean Six Sigma Yellow Belt Certification Lean Six Sigma Yellow Belt Six Sigma Fundamentals Questions and Answers 2 — Questions and Answers
Question 1: What does the acronym DMAIC stand for in Six Sigma?
- Define, Measure, Analyze, Improve, Control (Correct answer)
- Design, Manage, Assess, Implement, Check
- Develop, Monitor, Adjust, Integrate, Close
- Define, Map, Audit, Inspect, Confirm
Correct answer: Define, Measure, Analyze, Improve, Control
DMAIC stands for Define, Measure, Analyze, Improve, and Control, which is the core problem-solving methodology in Six Sigma.
Question 2: Which metric represents the number of defects per million opportunities in Six Sigma?
- DPMO (Correct answer)
- DPU
- CTQ
- VOC
Correct answer: DPMO
DPMO (Defects Per Million Opportunities) is the standard Six Sigma metric that quantifies process performance on a per-million scale.
Question 3: A process operating at a Six Sigma level produces no more than how many defects per million opportunities?
- 3.4 (Correct answer)
- 6.0
- 1.0
- 10.0
Correct answer: 3.4
A true Six Sigma process allows no more than 3.4 defects per million opportunities, accounting for a 1.5 sigma shift.
Question 4: Which of the following best describes a Critical to Quality (CTQ) characteristic?
- A measurable attribute of a product that is most important to the customer (Correct answer)
- A financial metric used to justify Six Sigma projects
- The total number of defects found during inspection
- A tool for mapping the steps in a manufacturing process
Correct answer: A measurable attribute of a product that is most important to the customer
CTQ characteristics are the specific, measurable attributes of a product or process that customers identify as most important to quality.
Question 5: What is the primary purpose of the Define phase in DMAIC?
- To clearly state the problem, goals, and project scope (Correct answer)
- To collect data on current process performance
- To identify the root causes of defects
- To implement solutions and verify results
Correct answer: To clearly state the problem, goals, and project scope
The Define phase establishes the problem statement, project goals, scope, and timeline before any data collection begins.
Question 6: Which term describes variation in a process caused by identifiable, irregular factors?
- Special cause variation (Correct answer)
- Common cause variation
- Random variation
- Systematic sampling
Correct answer: Special cause variation
Special cause variation results from specific, assignable factors that are not part of the normal process operation and can be identified and removed.
Lean Six Sigma Yellow Belt Certification Lean Six Sigma Yellow Belt Six Sigma Fundamentals Questions and Answers 2
What does the acronym DMAIC stand for in Six Sigma?