Quality Assurance & Process Control Flashcards
7 cards from real CPT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Quality Assurance & Process Control flashcards as text
On an X-bar and R chart, the R chart monitors:
Answer: The variation within subgroups
The R (range) chart tracks the spread or variability within each subgroup, measuring within-subgroup variation.
Which quality cost category includes scrap, rework, and warranty repairs?
Answer: Internal failure costs
Scrap and rework are internal failure costs because they occur before the product reaches the customer; warranty repairs are external failure costs.
A process produces 500 units with 15 defective. What is the defect rate expressed as a percentage?
Answer: 3.0%
Defect rate = (15 ÷ 500) × 100 = 3.0%, calculated by dividing defectives by total units produced.
The primary purpose of a gage R&R study is to:
Answer: Evaluate the measurement system's contribution to total variation
Gage R&R (Repeatability and Reproducibility) quantifies how much of the observed variation comes from the measurement system itself versus actual part variation.
In Six Sigma, DMAIC stands for Define, Measure, Analyze, Improve, and:
Answer: Control
Control is the final phase of DMAIC, focused on sustaining improvements and preventing the process from reverting to its previous state.
Which chart is most appropriate for monitoring the number of defects on a single unit when the sample size is constant?
Answer: c-chart
A c-chart monitors the count of defects per inspection unit when the sample size remains constant.
ISO 9001 certification primarily demonstrates that an organization has:
Answer: A documented and consistently followed quality management system
ISO 9001 certifies that a company has established and maintains a documented quality management system that consistently meets requirements.