Quality Assurance & Improvement Flashcards
7 cards from real CPP 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 & Improvement flashcards as text
Which quality improvement methodology uses the DMAIC framework specifically for improving existing processes?
Answer: Six Sigma
Six Sigma's DMAIC (Define, Measure, Analyze, Improve, Control) is a data-driven framework for reducing defects in existing processes.
In packaging QA, a 'skip-lot' inspection program reduces inspection frequency based on:
Answer: Demonstrated supplier quality history over consecutive acceptable lots
Skip-lot programs reward consistently performing suppliers by reducing inspection frequency when they demonstrate a track record of conforming shipments.
Which tool is most appropriate for prioritizing which packaging quality problems to solve first when resources are limited?
Answer: Priority matrix (Impact-Effort matrix)
A priority matrix plots problems by impact and effort to solve, helping teams focus limited resources on high-impact, achievable improvements first.
A packaging quality engineer notices a trend of seven consecutive points above the mean on an X-bar chart. According to Western Electric rules, this indicates:
Answer: A non-random signal suggesting a special cause requiring investigation
Seven consecutive points on the same side of the centerline is one of the Western Electric (Nelson) rules signaling a non-random pattern and likely assignable cause.
What is the purpose of a 'design of experiments' (DOE) approach in packaging process optimization?
Answer: To systematically study how multiple input variables interact to affect process outputs
DOE allows engineers to efficiently test combinations of process variables to identify which factors and interactions most significantly affect quality outcomes.
Under a quality management system, 'document control' for packaging specifications primarily ensures that:
Answer: Only current, approved versions of specifications are in use at point of manufacture
Document control prevents use of obsolete specifications by ensuring only approved, current versions are accessible where work is performed.
A packaging supplier's process has Cp = 1.50 but Cpk = 0.90. This situation most likely indicates:
Answer: The process has adequate spread but the mean is significantly off-center from the specification midpoint
When Cp is high but Cpk is substantially lower, the process variation is small enough but the distribution is shifted toward or beyond one specification limit.