An index of utility can be distinguished from an index of reliability and an index of validity in that an index of utility can tell us something about
A) how consistently a test measures what it measures in a particular context.
B) whether a test measures what it purports to measure in a particular context.
C) the practical value of the information derived from what a test measures.
D) None of these

Question

Quizplus · Accepted Answer

An index of utility provides information about the practical value of the information derived from what a test measures, such as how useful it is for making decisions or solving problems. An index of reliability tells us how consistently a test measures what it measures in a particular context, while an index of validity tells us whether a test measures what it purports to measure in a particular context.

An Index of Utility Can Be Distinguished from an Index