Which of the following situations is extraordinarily unlikely?
A) A reliable test is valid.
B) A valid test is unreliable.
C) A invalid test is unreliable.
D) An unreliable test is invalid.

Question

Quizplus · Accepted Answer

A valid test indicates that it is measuring what it intends to measure, while a reliable test produces consistent results. It is possible for a valid test to be unreliable, in which case it is measuring what it intends to measure but not consistently. However, it is extremely unlikely for a valid test to be unreliable, as the consistency of results is a key component of validity. The other options are more likely, as an invalid test and an unreliable test are both possible and can often occur together.

Which of the Following Situations Is Extraordinarily Unlikely