Using paired observations (dependent observations) is most advantageous when
A) sample size is unequal
B) standard deviations must be estimated from samples
C) the correlation between the pairs of scores is high
D) the correlation between the pairs of scores is low

Question

Quizplus · Accepted Answer

Using paired observations is most advantageous when the correlation between the pairs of scores is high because it allows for more accurate estimation of the treatment effect by accounting for the variability between pairs.

Using Paired Observations (Dependent Observations) Is Most Advantageous When