Basic Flashcards
7 cards from real Certified Six Sigma Black Belt Exam practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Basic flashcards as text
Which of the following best describes the purpose of a control chart in Six Sigma?
Answer: To monitor process variation over time and detect special causes
Control charts monitor process variation over time to distinguish between common cause (natural) variation and special cause (assignable) variation.
In DMAIC, the 'Analyze' phase primarily focuses on:
Answer: Identifying root causes of the problem
The Analyze phase uses data and statistical tools to identify and verify the root causes contributing to the problem.
What does 'Cp' measure in process capability analysis?
Answer: The potential capability assuming the process is centered
Cp measures the potential capability of a process by comparing the specification width to the process spread, assuming the process is perfectly centered.
A Pareto chart is based on which principle?
Answer: 80% of effects come from 20% of causes
The Pareto principle (80/20 rule) states that roughly 80% of problems stem from 20% of causes, guiding teams to focus on the vital few issues.
Which metric directly measures the probability of producing a defect-free unit at every step of a multi-step process?
Answer: Rolled Throughput Yield (RTY)
Rolled Throughput Yield (RTY) multiplies the yield of each process step together, reflecting the true probability that a unit passes all steps without a defect.
When a process has a sigma level of 6, its DPMO is approximately:
Answer: 3.4
A Six Sigma process produces approximately 3.4 defects per million opportunities, accounting for a 1.5-sigma long-term shift.
What is the primary role of a Six Sigma Black Belt?
Answer: Leading complex cross-functional improvement projects full-time
A Six Sigma Black Belt leads complex improvement projects full-time, applying advanced statistical tools and mentoring Green Belts.