The Data Sufficiency

(Article on Data Sufficiency by Raleigh Management Institute)

GMAT Maths test use questions on Data Sufficiency to evaluate test takers' ability to reason in a quantitative manner. Data sufficiency can't test your ability to manipulate numbers. The problem solving section of GMAT Math can test this ability. You are not supposed to do lot of calculations on the questions related to Data Sufficiency. If you are doing, then you don't know how to solve such type of questions. Data sufficiency questions are of high school level. These questions can be on fractions, average, decimals, circles, basic arithmetic, basic principles of geometry, calculating volumes and areas of geometric shapes.




If you want to better utilize your time in the GMAT Maths exam, then summarize and memorize the answer choices which are always almost exactly the same. Systematically analyze the answer choices to get good final quantitative score. Study all the questions carefully and try to find out what is being asked in a question and then determine how the problem can be solved. A data sufficiency question can ask for a specific value, range of numbers or true/false answer choices. Don't make careless assumptions while answering GMAT Maths questions. The GMAT test measures your ability to determine facts from various visual and false assessment like relying on a geometry diagram to determine length, angles etc.Use only that information which is provided in your question.Remember each question in the Data Sufficiency section is independent of all other questions.



Your are required to use the process of elimination and not lengthy calculations while dealing with Data Sufficiency questions. If the first two statements give the same information in different manner, then through the process of elimination u know that the correct answer is either 'D' or 'E'. You may have to make real life assumptions in some questions. To become comfortable with data sufficiency questions, practice as much as possible.





Source:

Raleigh Management Institute: Data Sufficency