Which of the following is true?
A)A measure cannot be reliable without being valid.
B)Numerical measures are rarely valid.
C)A measure cannot be valid without being reliable.
D)Numerical measures are always reliable.

Question

Quizplus · Accepted Answer

Reliability refers to consistency in measurement, while validity refers to the accuracy of the measurement in capturing what it intends to measure. A measure can be reliable but not valid, meaning it consistently measures the same thing but that thing may not actually be what is intended to be measured. Therefore, it is possible for a measure to be reliable but not valid, but a measure cannot be valid without being reliable. Option A and B are incorrect as numerical measures can be both reliable and valid, depending on the quality of the measurement instrument and procedure. Option D is also incorrect as numerical measures, like any other measures, can be affected by measurement errors, bias, and variability.

Which of the Following Is True