This article explains the PBCC (Point-Biserial Correlation Coefficient). On the Item Analysis table of the your IRAT Dashboard, the heading of the last column reads PBCC. PBCC, also referred to as the Point-Biserial Correlation Coefficient shows the relationship between how the learner performs on the item and their total test score. The range is from –1.00 to 1.00. The… Continue reading What is PBCC?