FREE Lean Six Sigma Green Belt DMAIC: Measure Phase Tools 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 FREE Lean Six Sigma Green Belt DMAIC: Measure Phase Tools Questions and Answers flashcards as text
What is the formula for calculating Rolled Throughput Yield (RTY)?
Answer: The product of first-pass yields at each process step
RTY is calculated by multiplying the first-pass yield of each individual process step, revealing hidden factory losses that final yield alone would miss.
During a Gage R&R study, the total Gage R&R variation is 35% of total variation. How should this measurement system be classified?
Answer: Marginally acceptable and may require improvement
A Gage R&R between 10% and 30% is marginally acceptable, and above 30% is generally considered unacceptable, though some guidelines treat 10-30% as conditionally acceptable depending on application.
Which sampling strategy ensures every member of a population has an equal chance of being selected?
Answer: Simple random sampling
Simple random sampling gives every individual in the population an equal probability of selection, minimizing selection bias.
What does a Cp index measure that Cpk does not account for?
Answer: Process capability assuming the process is perfectly centered
Cp measures potential capability by comparing specification width to process spread without considering how centered the process mean is relative to specifications.
A process sigma level of 4.0 corresponds approximately to how many DPMO?
Answer: 6,210 DPMO
A 4-sigma process corresponds to approximately 6,210 DPMO, reflecting a much higher defect rate than the 3.4 DPMO target of Six Sigma.
What is the primary purpose of an operational definition in the Measure phase?
Answer: To provide a clear, measurable description of what is being measured and how
An operational definition removes ambiguity by precisely specifying what to measure, the measurement method, and the decision criteria for conformance.