The drill/test correlation report calculates the Pearson correlation coefficient between Drill results and test results from members of a group. It predicts whether a participant will perform well on a test based on the control they have over the content of the corresponding drill. 

The Pearson correlation coefficient goes from 0 - 1. This rule applies: The higher the coefficient, the higher the predictive value of the drills over the test results. 

Do you want to know more about how the Pearson correlation coefficient works? Then click here. 

To calculate the coefficient, you need to have both drills the test is based on in the group.

Below you can see where to request a drill/test correlation report.

• Open a group in the 'Manage → Groups' page
• Then click on the test in the group to open Test Result window.
• Click on the download icon next to 'Drill/test correlation' to generate the report.