Chapter 35
Data Interpretation (DI) questions appear as sets of problems that refer to the same group of one to three related graphs or charts. On the GRE, you will see an average of two DI sets per exam, each with two or three associated problems.
DI questions are not, in general, particularly difficult. However, they can take a lot of time to solve if you aren’t careful. It is very important to learn how to tackle them efficiently, using the on-screen calculator when appropriate.