Lean Six Sigma Green Belt Certification FREE Lean Six Sigma Green Belt Prep Questions and Answers 2 — Questions and Answers
Question 1: Which DMAIC phase focuses on identifying the root cause of a process problem?
- Define
- Measure
- Analyze (Correct answer)
- Improve
Correct answer: Analyze
The Analyze phase uses data and statistical tools to identify and verify root causes of process problems.
Question 2: What is the primary purpose of a SIPOC diagram in Lean Six Sigma?
- To calculate process capability
- To provide a high-level overview of Suppliers, Inputs, Process, Outputs, and Customers (Correct answer)
- To track defects per million opportunities
- To assign team roles and responsibilities
Correct answer: To provide a high-level overview of Suppliers, Inputs, Process, Outputs, and Customers
A SIPOC diagram maps out Suppliers, Inputs, Process steps, Outputs, and Customers to give a high-level view of a process.
Question 3: In a control chart, what does a point beyond the upper or lower control limit indicate?
- Normal variation
- A process that is in statistical control
- A special cause of variation (Correct answer)
- An expected seasonal trend
Correct answer: A special cause of variation
Points beyond control limits signal special cause variation, meaning something unusual has affected the process.
Question 4: What does the term 'Voice of the Customer' (VOC) refer to in Lean Six Sigma?
- Internal audit feedback from management
- The customer's stated and unstated needs and expectations (Correct answer)
- Employee satisfaction survey results
- Supplier quality certifications
Correct answer: The customer's stated and unstated needs and expectations
VOC captures the customer's requirements, preferences, and expectations that drive quality improvement efforts.
Question 5: Which Lean tool is used to organize a workplace by sorting, setting in order, shining, standardizing, and sustaining?
- Kaizen
- Kanban
- 5S (Correct answer)
- Poka-Yoke
Correct answer: 5S
5S is a workplace organization method consisting of Sort, Set in Order, Shine, Standardize, and Sustain.
Question 6: What is the significance of a Cp value greater than 1.33 in process capability analysis?
- The process is not capable of meeting specifications
- The process barely meets minimum capability requirements
- The process is considered capable with an adequate safety margin (Correct answer)
- The process requires immediate corrective action
Correct answer: The process is considered capable with an adequate safety margin
A Cp value above 1.33 indicates the process spread fits well within specification limits with sufficient margin.
Lean Six Sigma Green Belt Certification FREE Lean Six Sigma Green Belt Prep Questions and Answers 2
Which DMAIC phase focuses on identifying the root cause of a process problem?