EDUCATION (CBSE/UGC NET)

Detailed explanation-1: -Test-retest reliability is a measure of reliability obtained by administering the same test twice over a period of time to a group of individuals. The scores from Time 1 and Time 2 can then be correlated in order to evaluate the test for stability over time.

Detailed explanation-2: -The reliability of test scores is the extent to which they are consistent across different occasions of testing, different editions of the test, or different raters scoring the test taker’s responses.

Detailed explanation-3: -Reliability: A good test should be highly reliable. This means that the test should give similar results even though different testers administrate it, different people scores in different forms of the test are given and the same person takes that test at two or more different times.

Detailed explanation-4: -Reliability means that something is consistent time and time again, whereas validity means that the test is a precise way of measuring what it is supposed to measure.

Detailed explanation-5: -Another measure of reliability is the internal consistency of the items. For example, if you create a quiz to measure students’ ability to solve quadratic equations, you should be able to assume that if a student gets an item correct, he or she will also get other, similar items correct.