When we have reliability in a measurement, we also have validity.

Question

Quizplus · Accepted Answer

Reliability refers to the consistency and stability of measurement results over time, across different measurement tools or observers. Validity refers to the degree to which a measure actually measures what it intends to measure. While reliability is necessary for validity, it is possible to have reliability without validity. For example, a ruler that always measures a pencil as exactly 6 inches long is reliable, but not valid since it does not accurately measure the true length of the pencil.

When We Have Reliability in a Measurement, We Also Have