Which of the following equations represents the relationship between true score, actual score, and reliability?
A) Reliability equals true score divided by actual score.
B) Reliability equals true score plus actual score.
C) Reliability equals actual score divided by true score.
D) Reliability equals actual score minus true score.

Question

Quizplus · Accepted Answer

Reliability in the context of psychological testing and measurement is defined as the ratio of the variance of the true score to the variance of the observed (actual) score. However, none of the options provided directly matches this definition. The closest option, based on a misunderstanding, is A, but it incorrectly represents the relationship as a simple division of scores rather than a ratio of variances. In reality, reliability is a more complex concept that cannot be accurately captured by any of the options given.

Which of the Following Equations Represents the Relationship Between True