Quality Control Flashcards
7 cards from real CWLP 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 Control flashcards as text
Which ISO standard is most directly applicable to quality management systems in warehouse and logistics operations?
Answer: ISO 9001
ISO 9001 specifies requirements for a quality management system and is the most widely applied standard for organizations seeking to consistently meet customer quality expectations.
A Pareto analysis of warehouse picking errors reveals that 3 out of 20 error types account for 78% of all errors. The correct action is to:
Answer: Focus improvement efforts on the 3 most frequent error types first
Pareto analysis applies the 80/20 principle: prioritizing the vital few causes yields the greatest quality improvement with the least resources.
What is the purpose of a Material Review Board (MRB) in a warehouse or logistics operation?
Answer: To make disposition decisions on nonconforming materials
An MRB is a cross-functional team that evaluates nonconforming materials and determines whether to accept, rework, repair, scrap, or return them.
In quality management, 'calibration' of measuring instruments is important because:
Answer: It ensures measurement accuracy and consistency by comparing to known standards
Calibration verifies that measuring instruments provide accurate, traceable readings by comparing them against certified reference standards at defined intervals.
Which chart is most appropriate for monitoring the proportion of defective items in variable-sized daily samples?
Answer: p-chart
A p-chart tracks the proportion of nonconforming items in a sample and accommodates variable sample sizes, making it ideal for attribute data with changing daily volumes.
A warehouse team implements a mistake-proofing device that physically prevents a wrong-sized carton from being sealed. This is an example of:
Answer: Poka-yoke
Poka-yoke (error-proofing) uses physical or procedural mechanisms to prevent errors from occurring or to detect them immediately when they do.
What does DPMO stand for, and why is it used in logistics quality measurement?
Answer: Defects Per Million Opportunities; allows comparison of quality across processes of different complexity
DPMO (Defects Per Million Opportunities) normalizes defect counts by the number of opportunities for error, enabling fair quality comparisons across processes with different complexity.