The Improve Phase Flashcards
7 cards from real Lean Six Sigma Yellow 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 7 The Improve Phase flashcards as text
A team wants to implement mistake-proofing on an assembly line. What Lean term describes this approach?
Answer: Poka-yoke
Poka-yoke refers to mistake-proofing devices or methods that prevent errors or make defects immediately detectable.
During solution implementation, which stakeholder communication approach is most effective for reducing resistance?
Answer: Involving key stakeholders early and updating them throughout the process
Engaging stakeholders early and maintaining ongoing communication builds trust and reduces resistance to change.
A Yellow Belt team proposes increasing inventory buffers to prevent stockouts. A lean practitioner would likely challenge this because:
Answer: Excess inventory is considered a waste that hides other process problems
Lean views excess inventory as waste (muda) because it consumes space and capital while masking underlying process instability.
What does a 'future state' value stream map represent in the Improve phase?
Answer: The ideal process design after waste is eliminated
The future state map depicts the redesigned process with waste removed, serving as the implementation target.
A team runs an A/B test comparing two process configurations. After the test, the new configuration shows a statistically significant improvement. What should be the next step?
Answer: Develop an implementation plan to roll out the improved configuration
Once a solution is validated with statistical significance, the team should plan and execute full-scale implementation.
Which of the following best describes a 'pull system' in Lean production?
Answer: Downstream processes signal upstream processes to produce only what is needed
A pull system uses downstream demand signals (like kanban cards) to trigger upstream production, reducing overproduction.
When implementing a solution, what is the primary reason for documenting the new standard operating procedure (SOP)?
Answer: To ensure the improvement is consistently applied and gains are sustained
SOPs capture the improved method so every operator performs the process the same way, sustaining the gains over time.