CAT aspirants may note that improving your calculations is the first step to improve your Data Interpretation. You need to work on both accuracy and speed to improve this section. Speed can be increased by practicing regularly.
To improve your speed try doing calculations in your mind rather than using pencil/pen. In the starting it would take some time to do calculations in mind, but slowly and gradually you will see a mark difference in your speed.
Solve different type of case lets instead of sticking to one type. Develop your skills to solve different case lets.
Data interpretation is not a subject to be learned instantly. It improves with practice. Regular practice can do wonders in your speed as well as analyzing case lets.
CAT 2013 will be conducted in coming October 16 to November 11 but notification to this effect is likely to be out on July 21, 2013 (Watch this space for latest news on CAT 2013)
on DI :