A measure can be reliable without being valid.

Question

Quizplus · Accepted Answer

Reliability refers to the consistency of measurements or the degree to which a measure produces consistent results. Validity refers to whether a measure assesses what it is intended to measure. A measure can be reliable (consistent) but not valid (not measuring what it is intended to measure). For example, a bathroom scale may consistently report the same weight every time it is stepped on, but it may not accurately measure body composition or fat percentage, so it may not be a valid measure of overall health.

A Measure Can Be Reliable Without Being Valid