Lean Six Sigma Black Belt Certification FREE Lean Six Sigma Black Belt Define and Measure Phases Questions and Answers 2 — Questions and Answers
Question 1: A Black Belt is chartering a new project. Which tool best helps translate the Voice of the Customer into measurable Critical-to-Quality characteristics?
- CTQ tree (Correct answer)
- Pareto chart
- Control chart
- Fishbone diagram
Correct answer: CTQ tree
A CTQ tree systematically breaks down broad customer needs into specific, measurable quality requirements.
Question 2: During the Define phase, what is the primary purpose of a SIPOC diagram?
- To provide a high-level overview of the process before detailed mapping (Correct answer)
- To identify the root cause of defects
- To calculate process capability
- To establish statistical control limits
Correct answer: To provide a high-level overview of the process before detailed mapping
A SIPOC diagram gives stakeholders a high-level snapshot of Suppliers, Inputs, Process, Outputs, and Customers before diving into detailed analysis.
Question 3: Which metric represents the number of defect opportunities per million that a process produces?
- DPMO (Correct answer)
- Cp
- Cpk
- RTY
Correct answer: DPMO
Defects Per Million Opportunities (DPMO) quantifies the defect rate normalized to one million opportunities for comparison across processes.
Question 4: A process has a short-term capability index Cp of 2.0 but a Cpk of 1.2. What does this indicate?
- The process spread is acceptable but the mean is shifted off-center (Correct answer)
- The process has too much variation
- The measurement system is unreliable
- The specification limits are too wide
Correct answer: The process spread is acceptable but the mean is shifted off-center
A Cp higher than Cpk indicates the process variation fits within spec limits but the process mean is not centered between them.
Question 5: In the Measure phase, what is the primary purpose of conducting a Gage R&R study?
- To quantify measurement system variation due to repeatability and reproducibility (Correct answer)
- To determine the sigma level of the process
- To validate the project charter scope
- To prioritize potential root causes
Correct answer: To quantify measurement system variation due to repeatability and reproducibility
A Gage R&R study separates measurement variation into repeatability (equipment) and reproducibility (operator) components to ensure data reliability.
Question 6: When establishing a process baseline, a Black Belt collects 500 units and finds 38 defective. If each unit has 4 opportunities for a defect, what is the DPMO?
- 19,000 (Correct answer)
- 76,000
- 38,000
- 9,500
Correct answer: 19,000
DPMO = (38 defects / (500 units × 4 opportunities)) × 1,000,000 = 19,000.
Lean Six Sigma Black Belt Certification FREE Lean Six Sigma Black Belt Define and Measure Phases Questions and Answers 2
A Black Belt is chartering a new project.
Which tool best helps translate the Voice of the Customer into measurable Critical-to-Quality characteristics?