Quality Control Flashcards

Which statistical tool is used to identify the root cause of defects by organizing potential causes into categories?

Answer: Fishbone diagram

A fishbone (Ishikawa) diagram categorizes potential causes of a defect into branches such as man, machine, method, and material.

A warehouse receives a shipment of 5,000 units. Using an AQL of 2.5 with a sample size of 125, inspectors find 6 defects. What is the appropriate action?

Answer: Accept the shipment

At AQL 2.5 with a sample size of 125, the acceptance number is typically 7, so 6 defects falls within the acceptable range.

What does FIFO stand for in warehouse quality and inventory management?

Answer: First In, First Out

FIFO (First In, First Out) ensures older inventory is used or shipped before newer stock, reducing spoilage and obsolescence.

Which document provides the agreed-upon specifications and quality standards that inbound shipments must meet?

Answer: Vendor quality agreement

A vendor quality agreement formally defines the quality standards, inspection criteria, and compliance requirements that suppliers must meet.

A control chart shows data points consistently trending upward over 7 consecutive points. This pattern indicates:

Answer: A process shift requiring investigation

Seven consecutive points trending in one direction is a Western Electric rule violation, signaling a non-random process shift that requires investigation.

What is the primary purpose of a goods receipt inspection in a warehouse setting?

Answer: To confirm inbound items meet quantity, quality, and labeling requirements

Goods receipt inspection verifies that incoming shipments match ordered quantities, meet quality standards, and are correctly labeled before acceptance.

Which quality metric measures the percentage of orders shipped without errors in quantity, item, and documentation?

Answer: Perfect order rate

The perfect order rate tracks the percentage of orders delivered complete, on time, undamaged, and with accurate documentation.