Final answer:
A quality metric describes an attribute, while a quality measurement is an actual value.
Step-by-step explanation:
The difference between a quality metric and a quality measurement is that a metric describes an attribute, while a measurement is an actual value. For example, in the context of measuring the quality of a product, a metric could be the number of defects, while a measurement would be the actual count of defects found in the product. A metric provides a way to describe a specific characteristic or attribute, while a measurement gives the quantifiable value of that characteristic.