A half-test reliability of .7 is equivalent to an estimated full test reliability of about
A) .7
B) .8
C) .9
D) 1.0

Question

Quizplus · Accepted Answer

The Spearman-Brown prediction formula is used to estimate the full test reliability from the half-test reliability. If the half-test reliability is .7, using this formula, the estimated full test reliability would be higher than .7, and the closest estimate given the options is .8.

A Half-Test Reliability of