Which term is used to describe the ability of equipment to perform a specific function correctly?

The term that describes the ability of equipment to perform a specific function correctly is accuracy. In the context of biomedical equipment, accuracy refers to how close a measured value is to the true or actual value. For example, when calibrating medical devices, it is essential that the devices deliver results that reflect the correct measurements, such as the correct dosage of medication or the appropriate pressure in a blood pressure monitor.

While precision, reliability, and functionality are related concepts, they do not specifically focus on the correctness of the output when comparing it to a known standard. Precision relates to the consistency of results across multiple measurements; reliability involves the device's ability to perform consistently over time without failure; and functionality describes the overall capability of the equipment to serve its intended purpose. Hence, accuracy is the most accurate term to describe the correct performance of equipment in delivering specific functions.