Lean Six Sigma Yellow Belt Certification Basic 3 — Questions and Answers
Question 1: In Lean, 'kaizen' refers to:
- A large-scale transformation project
- Continuous incremental improvement (Correct answer)
- A type of visual management board
- Eliminating a specific type of waste
Correct answer: Continuous incremental improvement
Kaizen is a Japanese philosophy meaning continuous, incremental improvement involving all employees.
Question 2: What does 'Cp' measure in process capability analysis?
- The process centering relative to specifications
- The process spread relative to specification width (Correct answer)
- The percentage of defective products
- The average process output
Correct answer: The process spread relative to specification width
Cp measures whether the process spread (6 sigma) fits within the specification width, ignoring process centering.
Question 3: Which tool would best help a team visualize how work flows through a process and identify bottlenecks?
- Fishbone diagram
- Value stream map (Correct answer)
- Pareto chart
- Run chart
Correct answer: Value stream map
A value stream map shows the flow of materials and information, making bottlenecks and waste visible.
Question 4: The 'motion' waste in Lean refers to:
- Moving products from one location to another
- Unnecessary movement of people or equipment (Correct answer)
- Idle time while waiting for materials
- Excess inventory in the system
Correct answer: Unnecessary movement of people or equipment
Motion waste involves unnecessary physical movement of people or equipment that does not add value.
Question 5: In a normal distribution, approximately what percentage of data falls within one standard deviation of the mean?
- 95%
- 99.7%
- 68% (Correct answer)
- 50%
Correct answer: 68%
The empirical rule states that approximately 68% of data falls within one standard deviation (±1σ) of the mean.
Question 6: A Yellow Belt's primary role in a Six Sigma project is to:
- Lead complex statistical analysis and projects
- Support Green and Black Belts and participate in improvement teams (Correct answer)
- Approve project budgets and resource allocation
- Design new products using DFSS methodology
Correct answer: Support Green and Black Belts and participate in improvement teams
Yellow Belts support improvement efforts by participating on project teams and applying basic Lean Six Sigma tools.
Question 7: What is a 'defect opportunity' in Six Sigma measurement?
- A chance to reduce the number of defects
- Any point in a product or service where a defect could occur (Correct answer)
- A scheduled quality inspection checkpoint
- A customer complaint about product quality
Correct answer: Any point in a product or service where a defect could occur
A defect opportunity is any characteristic of a product or service that could be measured and could fail to meet customer requirements.
Lean Six Sigma Yellow Belt Certification Basic 3
In Lean, 'kaizen' refers to: