For taking immediate action to improve in DI section, CAT 2012 aspirants may take following actions:
Most DI questions will consist of a bunch of statistics, numbers & diagrams that might look scary at first instance but are actually not at all difficult to solve. In fact the trend has been: the scarier a DI set/caselet looks, the easier it is to solve. So before you lose heart & move on to an easier-looking set/caselet, scan that scary set & the list of questions in it. There will be at least of couple of “sitters” (questions that can be easily answered). So Scan the Question.
The Data Interpretation section is calculation-intensive. And by “calculations” we mean stuff like 556/874 and not 2*9=? Such calculations can eat up your time. It is imperative, therefore to get very, very comfortable with calculations. Learn shortcuts that will help you calculate in your head or better still; figure out how Vedic Math works. It will help you a lot. So Hone your Calculation Skills/Speed.