13. Data Sufficiency

Question 1

What is Data Suffiency?

Answer 1

Quant question type that is broken into two categories: Value & Yes/No

Format: 2 statements that can be assumed true; be sure to look at each individually before together

Answer Choice order never changes

Look to rephrase/simplify complex question stems

Easier to disprove than to prove sufficiency

Question 2

What is the Elimination Grid?

Answer 2

Strategy to know how to eliminate wrong answer choices in DS questions

If considering answer 1 first use AD/BCE

If considering answer 2 first use BD/ACE

Question 3

What is 12TEN?

Answer 3

The order in which all DS questions have their answers ordered

(1) - A: Answer 1 only correct
(2) - B: Answer 2 only correct

(T) - C: Both answers correct, together only

(E) - D: Each answer is correct, separately

(N) - E: Neither answer is correct

Question 4

Data Sufficiency Flow Chart

Answer 4

Question 5

Data Sufficiency T-Diagram

Answer 5

A method to show work on DS questions

Question 6

What are Value questions?

Answer 6

Data Sufficiency question type

Questions have a single value

Determining Sufficiency:

• Sufficient: Single value proven by statement(s)
• Insufficient: Either multiple values or no value can be found using the statement(s) provided

Question 7

What are Yes/No questions?

Answer 7

Data Sufficiency question type

Questions that ask whether or not something is true

3 possible answers for question type

1) Always Yes –> Sufficient
2) Always No –> Sufficient
3) Maybe/Sometimes Yes or No –> Insufficient