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# GMAT: Data sufficiency 1

1-5, pg. 278. Created by Sal Khan.

## Want to join the conversation?

• What is meant at by data sufficiency?
• the available data that is given to you...
in general , you have to complete a calculation with the data that is given to you..
• How do these, or any, type of questions determine the potential success of a graduate student?
• In general, GMAT, GRE, SAT, etc. are not ideal for determining future success of students. Statistically, when combined with multiple other factors, (undergrad GPA, challenge of undergrad courses, career success, etc.), entrance essay a reasonably good estimate of success in graduate school emerges. However, they are some of the only broadly applicable, objective measures of student knowledge. Given that undergrad schools vary drastically and the fact that some students are returning after 20 or 30 years these are one of the few objective measures of likely success.

I think the data sufficiency questions are particularly useful for managers who may not need the exact numbers, but merely to know if the question they are asking an employee is in fact feasible.

Also and specifically, I have seen more than a couple students struggle severely with Statistics for Managers. Sometimes schools require specific leveling courses or provisional admission based on scores.
• The last question states in part two that "the square of the integers in the list equals 64." How do you know that means the square of the total number in the list equals 64 vs the square of the sum of the numbers in the list equals 64. The wording "the square of the integers in the list" would make it so i would not understand the problem and get it wrong. How did you know what it was asking?
• What's the difference between the GMAT test and CAT test?
• GMAT is the standard testo for admission in Business School in US and Europr. CAT is computer administered test mean you ll be using computer for test.
• Hello Sal, how to get the ebook of the questions which you are referring to. As its very difficult to understand the problem before you guide us through.