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).
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.
When you have been practicing DI questions for a while, you will begin to notice that there are different types or formats of questions in this section. There will be bar charts, tables, pie charts etc.
Try reading business newspapers which have articles that are data-intensive & have graphs & pie-charts etc. After reading the article, try to mentally collate & analyze the data provided in them.
Such activities will help you get into the “DI mode” & stay in that mode always to get success and achieve mission CAT 2012 !!