hey,

data interpretation topic questions comes in moderate standard. you should study the following topic for data interpretation for CAT exam.

Seating Arrangement, and Data Arrangement

Blood Relations

Syllogisms and Venn Diagrams

Assumption and Binary Logic

Clocks & Calendars

Puzzles

Data Sufficiency

Graphs Related

Tables and Caselets

follow book of  arun sharma, rs agarwal for examples.