Final answer:
Validity is the term used to describe whether a test measures what it is intended to measure, and it is essential for a test or survey to be accurate and credible.
Step-by-step explanation:
Ensuring that a test or a survey effectively measures what it is supposed to measure is known as Validity. Validity refers to the accuracy of a given result in measuring what it was designed to measure. For a measure to be valid, it must truly represent the phenomenon being studied. Reliability is also important, indicating the consistency of an instrument; however, a measure can be reliable without being valid. Both validity and reliability are crucial for research to be credible.
Ensuring that a test or survey effectively measures what it is supposed to measure is known as validity. Validity refers to the extent to which a given instrument or tool accurately measures what it's intended to measure. It is important for researchers to use instruments that are both highly reliable and valid.