Lean Six Sigma Yellow Belt Certification Lean Six Sigma Yellow Belt The Control Phase Questions and Answers 2 — Questions and Answers
Question 1: What is the primary purpose of a control chart in the Control phase of a Lean Six Sigma project?
- To monitor process performance over time and detect special cause variation (Correct answer)
- To identify root causes of defects in the process
- To map the current state of a value stream
- To calculate the cost of poor quality
Correct answer: To monitor process performance over time and detect special cause variation
Control charts track process behavior over time, distinguishing between common cause and special cause variation to ensure the process remains stable.
Question 2: Which document is typically created during the Control phase to ensure process improvements are sustained after the project team disbands?
- Project charter
- Fishbone diagram
- Control plan (Correct answer)
- Voice of the Customer survey
Correct answer: Control plan
A control plan documents the methods, responsibilities, and monitoring procedures needed to sustain improvements after the project concludes.
Question 3: What does the term 'standard work' refer to in the context of the Control phase?
- A one-time audit of the improved process
- Documented best practices that define the most efficient and repeatable way to perform a task (Correct answer)
- A statistical formula for calculating process capability
- The original process before any improvements were made
Correct answer: Documented best practices that define the most efficient and repeatable way to perform a task
Standard work captures the current best practice for performing a task consistently, reducing variation and ensuring all operators follow the same steps.
Question 4: When transitioning a Lean Six Sigma project to the process owner during the Control phase, which of the following is LEAST important?
- Training staff on new procedures
- Establishing response plans for out-of-control conditions
- Documenting the brainstorming sessions from the Analyze phase (Correct answer)
- Setting up ongoing data collection methods
Correct answer: Documenting the brainstorming sessions from the Analyze phase
While brainstorming records have historical value, the Control phase handoff focuses on training, monitoring systems, and response plans rather than past ideation documentation.
Question 5: What is a reaction plan in the context of the Control phase?
- A plan for how to celebrate project completion
- A predefined set of actions to take when a process metric goes out of specification (Correct answer)
- A document outlining the project timeline
- A strategy for gaining stakeholder buy-in
Correct answer: A predefined set of actions to take when a process metric goes out of specification
A reaction plan specifies exactly what corrective actions to take, who is responsible, and what escalation steps to follow when monitoring detects an out-of-control condition.
Question 6: Which of the following best describes the purpose of a process audit in the Control phase?
- To identify new improvement opportunities for a future project
- To verify that the improved process is being followed as documented and delivering expected results (Correct answer)
- To calculate the sigma level of the original process
- To create a SIPOC diagram for management review
Correct answer: To verify that the improved process is being followed as documented and delivering expected results
Process audits in the Control phase verify adherence to new standard operating procedures and confirm that the improvements continue to produce the expected outcomes.
Lean Six Sigma Yellow Belt Certification Lean Six Sigma Yellow Belt The Control Phase Questions and Answers 2
What is the primary purpose of a control chart in the Control phase of a Lean Six Sigma project?