As the degree of reliability increases,the proportion of
A) total variance attributed to true variance decreases.
B) total variance attributed to true variance increases.
C) total variance attributed to error variance increases.
D) None of these

Question

Quizplus · Accepted Answer

As the degree of reliability increases, the proportion of total variance attributed to true variance increases. This is because reliability is the extent to which a measure consistently measures what it is supposed to measure - in other words, the extent to which the true score is separated from measurement error. As reliability increases, the proportion of variance that can be attributed to true score variance increases, which in turn decreases the proportion of variance that can be attributed to error variance.

As the Degree of Reliability Increases,the Proportion of