A reliability coefficient is
A) an index.
B) a proportion of the total variance attributed to true variance.
C) unaffected by a systematic source of error.
D) All of these

Question

Quizplus · Accepted Answer

A reliability coefficient is an index that assesses the consistency or stability of a measurement. It is a proportion of the total variance that is attributed to true variance, which indicates the degree to which the measure is free from error. A reliability coefficient is affected by both random and systematic sources of error, but it can be used to estimate the degree to which the latter affects the results. Thus, all of these options describe aspects of a reliability coefficient.

A Reliability Coefficient Is