Lean Six Sigma Green Belt Control Phase and Sustainment Questions and Answers Flashcards
6 cards from real Lean Six Sigma Green Belt Certification practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Lean Six Sigma Green Belt Control Phase and Sustainment Questions and Answers flashcards as text
In a control chart, what does a point beyond the upper control limit typically indicate?
Answer: Special cause variation is present
A point beyond a control limit signals that special cause variation has entered the process and investigation is needed.
Which element is NOT typically included in a control plan?
Answer: Root cause analysis of the original problem
Root cause analysis belongs to the Analyze phase; the control plan focuses on monitoring and sustaining the implemented solution.
What is the purpose of conducting a process audit during the Control phase?
Answer: To verify that the improved process is being followed as documented
Process audits confirm that standard operating procedures reflect the improvements and are being consistently followed.
Which metric is used to confirm that a process remains capable after improvements are sustained?
Answer: Cpk
Cpk measures ongoing process capability relative to specification limits, confirming the process continues to meet requirements.
What role does a visual management board play in sustaining Lean Six Sigma improvements?
Answer: It makes key performance indicators visible to drive daily accountability
Visual management boards display real-time KPIs so teams can quickly identify deviations and maintain focus on sustained performance.
Why is it important to document lessons learned at the end of a Lean Six Sigma Green Belt project?
Answer: To help future project teams avoid repeated mistakes and replicate successes
Documenting lessons learned captures institutional knowledge that accelerates future projects and prevents recurring issues.