Sally steps on her bathroom scale, and it tells her that she weighs 145 pounds. When she steps on it again after her shower, she gets the same result. In fact, it has told her that her weight is stable at 145 pounds for several days now. Based on her observations, what can more accurately be said about the measurements provided by Sally's scale?

Question

Quizplus · Accepted Answer

Reliability refers to the consistency and stability of measurements over time. In this case, the scale has consistently provided the same measurement over several days, indicating that it is reliable. Validity, on the other hand, refers to the accuracy of the measurements. We cannot determine the validity of the scale based on this information alone. Therefore, choice C is the best answer.

Sally Steps on Her Bathroom Scale, and It Tells Her