According to the text, a drawback of using Pearson's product-moment correlation coefficient as an index of interrater reliability is that:
A) it cannot be computed for more than two observers.
B) two sets of numbers from two observers can be highly correlated even when they disagree markedly.
C) it tends to overstate the degree of correlation between observers' data.
D) All of the answers are correct.

Question

Quizplus · Accepted Answer

Pearson's correlation can show a high correlation between two sets of data even if the observers' ratings are consistently different by a constant amount, thus not truly reflecting agreement.

According to the Text, a Drawback of Using Pearson's Product-Moment