ds methods - amazon s3...computing your score pop quiz difficulty level question number student 1...

*** DS Methods ***

This file contains slides from each lesson of session 1.

The file includes lesson agendas, teaching points, MPrep-written

problems, and (where applicable) the full list of Official Guide (OG)

problem numbers for that problem type or content area.

The slides do not include the text of OG problems used in class

because teachers customize each lesson to fit class needs.

Data Sufficiency

Methods

The Quant Section

37 problems

75 minutes total

Problem Solving

20–22 problems

2 minutes per problem average

Data Sufficiency

15–17 problems

2 minutes per problem average

Quant Data Sufficiency Methods

1

What is Data Sufficiency?

Elimination Grid

Value vs. Yes / No

Prove Insufficient

Rephrasing

You’ll learn how to...

apply a consistent process to

all Data Sufficiency problems

prove insufficiency

test cases

Data Sufficiency Format

At a certain work conference, how many of the employees in attendance

were senior managers?

MPrep

(1) Of the employees who attended the conference, 80% were senior

managers.

(2) Of the employees who attended the conference, 64 were not senior

managers.

(A) Statement (1) ALONE is sufficient, but statement (2) is not sufficient

(B) Statement (2) ALONE is sufficient, but statement (1) is not sufficient

(C) BOTH statements TOGETHER are sufficient, but NEITHER

statement ALONE is sufficient

(D) EACH statement ALONE is sufficient

(E) Statements (1) and (2) TOGETHER are NOT sufficient



(C) BOTH statements TOGETHER are sufficient, but NEITHER

statement ALONE is sufficient



Know the Statements – Ask the Question

The statements are FACTS:

1. They ARE trying to help.

2. They do NOT lie.

3. They do NOT contradict each other.

At a certain work conference, how many of the employees in attendance

were senior managers?

(1) Of the employees who attended the conference, 80% were senior

managers.

(2) Of the employees who attended the conference, 64 were not senior

managers.

MPrep

Memorize the Answer Choices



(C) BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient



What you'll see on the test screen:

What you'll see in class today:

A (1)

B (2)

C Together

D Either

E Not Enough

What you'll see in class starting next week: NOTHING!

Elimination Grid

AD BCE

Sufficient

AD BCE

Not Sufficient

BD ACE

Sufficient

BD ACE

Not Sufficient

Subject Start with Statement (1)

Subject Start with Statement (2)

Is the integer x between 20 and 26, inclusive?

(1) x is a multiple of 9

(2) x = 18

MPrep

A (1)

B (2)

C Together

D Either

E Not Enough

(2) x = 18 (1) x is a multiple of 9

Is x = 20, 21, 22, 23, 24, 25, or 26?

x is definitely NOT in that list!

Sufficient

Sufficient NO, x is not 20, 21, ..., 26

x = ... 9, 18, 27, 36, 45 ...

MPrep


Q

BD ACE

D

Value vs. Yes/No

Value Question:

Sufficient = Single value

How many of the employees in attendance were senior managers?

NOT Sufficient = Multiple values

Yes/No Question:

Sufficient = Definitive Yes or definitive No

NOT Sufficient = Maybe



1


Elimination Grid

Value vs. Yes / No

Prove Insufficient

Rephrasing

Is p an integer?

MPrep

(1) 3p is an integer.

(2) is an integer.

p

3

A (1)

B (2)

C Together

D Either

E Not Enough

(2) is an integer. (1) 3p is an integer.

NOT Sufficient Sufficient

Does p = int?

1

2

1

3No!

No!

1 3 Yes!

2 6

3 9

4 12

Yes!

Yes!

Yes!

Is p an integer?

Q AD BCE

B

MPrep

p

3

2

3

3 Yes! 1

3p p p = int? (1)

Valid?

✔

✔

✔

✔

✔

✔

✔

p

p

3p = int? (2)

Valid?


3p = int

p =

int

3

p = ??

p

3= int

p = 3 int( )

p = int

AD BCE Does p = int?

Is p an integer?

Q

(2) is an integer. (1) 3p is an integer.

p

3

B

MPrep

Try to Prove Insufficiency

Yes/No

Pick a real value to test.

Get a yes or no answer.

(1) 3p is an integer.

3p p

1

2

p = int?

Yes!

No! Try to find a case that will

give the opposite answer

Case 1:

Case 2:

1

3

1

(1)

Valid?

✔

✔


Value

Yes/No

Find more than 1 value that answers

the question.

Find a value that makes the answer

to the question NO.

AND


to the question YES.


Yes/No

Pick a real value to test.

Get one answer.

(1) u = 1

Try to find a case that will

give a different answer.

Case 1:

Case 2:

u v v u

1

1

Greater?

=

v u

u v

1 1

1 2

1

2

Val?

✔

✔


Value

Yes/No


the question.


to the question NO.

AND




Yes/No

Pick real values to test.

Get one answer.

(1) None of the 3 numbers that are

facing up is divisible by 3.

Try to find a case that will

give a different answer.

Case 1:

Case 2:

{5, 5, 2}

At least

one = 5?

Yes!

No!

Set of 3 Adds

to 12?

✔

✔

(1)

None div

by 3?

✔

✔ {4, 4, 4}


Value

Yes/No


the question.


to the question NO.

AND




1


Elimination Grid

Value vs. Yes / No

Prove Insufficient

Rephrasing

If x, y, and z are positive integers, is (x + y)z greater than (y + z)x ?

(1) y > x

(2) z > x

A (1)

B (2)

C Together

D Either

E Not Enough

MPrep

(2) z > x (1) y > x

AD BCE Is z > x ?


(x + y)z > (y + z)x

xz + yz > xy + xz

yz > xy

-xz -xz

y y don't care about y

MPrep

If x, y, and z are positive integers, is (x + y)z greater than (y + z)x ?

Q

B

Rephrase the Question

Take the time to rephrase (simplify) the question!

Slow Down!

Is z > x ?

(x + y)z > (y + z)x


1


Elimination Grid

Value vs. Yes / No

Prove Insufficient

Rephrasing

Sentence Correction

Methods

The Verbal Section

41 problems

75 minutes total

Sentence Correction

15–17 problems

1:20 per problem

average

Reading Comprehension

3–4 passages

12–14 problems

Critical Reasoning

11–14 problems

Sentence Correction Methods

1

What SC tests

Tackling SC problems

Making SC complex

You’ll learn how to...

use the 4-step SC Process

read vertically and find “splits”

What to Expect

Original Sentence

• some portion underlined

(might be all!)

Carrots and beets are both best

growing in cooler climates.

(A) are both best growing

(B) is best grown

(C) is both best grown

(D) are best grown

(E) both are growing best

Answer Choices

• replace the underlined portion

• (A) is the original underline

• (B)–(E) are different

• will contain at least one

difference at both the

beginning and the end

of the underline

Subject-Verb Agreement

Verb Tense, Voice, etc.

Pronouns

Modifiers

Parallelism & Comparisons

Idioms

Connecting Punctuation

Correct Grammar Clear Meaning

Good Grammar

promotes

Clear Meaning

Grammar

Tested

What Does SC Test?

Pop Quiz

When Tom beat Adam at chess, he cried like a baby.

Yesterday I went to the store and will buy some milk.

Before buying a new car, Erin researched prices online.

The dog played with the boy, who barked and wagged his

tail.

SC 4-Step Process

1

2

3

4

Take a first glance.

Read for meaning.

Find a starting point.

Can I tackle this?

YES NO

Ignore Eliminate

(ALL incorrect choices)

Am I done?

YES

NO Find a new starting point.

Choose & move on!

A

B

C

D

E

Keep

track!


1

What SC tests


Making SC complex

How Does It Sound?

Companies do not always meet the profit forecasts made by

independent analysts, which can result in a drop in stock price even

when the company is profitable.

New Zealand was the first modern independent country to consider

women the legal equals of men.

The temperature in Florida is a lot warmer than Canada in

December.


1

What SC tests


Making SC complex

Prepare to Face the GMAT

Build Your Foundation

Prepare to Face the GMAT Build Your Foundation

1

You’ll learn...

What’s on the GMAT

How the GMAT is scored

How to get the most out of your preparation

GMAT Structure

Argument

Essay

Integrated

Reasoning Quant Verbal

B

R

E

A

K

B

R

E

A

K

F

I

N

I

S

H

S

T

A

R

T

Scoring: 0-6 1-8 0-51 0-51

1 essay 12 questions 37 questions

Problem Solving

Data Sufficiency

41 questions

Sentence Correction

Critical Reasoning


Combine to 200-800

30 min. 75 min. 75 min. 30 min. 8 min. 8 min. Time:


1

You’ll learn...




What would these scores look like?

Computing Your Score Pop Quiz

Difficulty

Level

Question Number

Student 1 Student 2

(A) Student 1 earns a higher score.

(B) Student 2 earns a higher score.

(C) Their scores are about the same.

Computing Your Score Pop Quiz

Difficulty

Level

Question Number

Student 1 Student 2

Where you end is what you get.

(A) Student 1 earns a higher score.

(B) Student 2 earns a higher score.

(C) Their scores are about the same.

100 -

90 -

80 -

70 -

60 -

50 -

40 -

30 -

20 -

10 -

0 -

Difficulty

Level

Question Number

1 2 3 4 5 6 7 8 . . . 36 37

Computing Your Score A Practical Understanding

The easiest way to understand your score:

WHERE YOU END IS WHAT YOU GET



100 -

90 -

80 -

70 -

60 -

50 -

40 -

30 -

20 -

10 -

0 -

Difficulty

Level

Question Number

1 2 3 4 5 6 7 8 . . . 36 37

Computing Your Score A Practical Understanding

Computing Your Score The Reality of Adaptive Testing

1 2 3 4 5 6 7 8 . . . 36 37

100 -

90 -

80 -

70 -

60 -

50 -

40 -

30 -

20 -

10 -

0 -

Difficulty

Level

Question Number

1 2 3 4 5 6 7 8 . . . 36 37

100 -

90 -

80 -

70 -

60 -

50 -

40 -

30 -

20 -

10 -

0 -

Difficulty

Level

Question Number

Computing Your Score The Reality of Adaptive Testing

They both miss about half of the questions.

The test feels DIFFICULT

for everyone!

100 -

90 -

80 -

70 -

60 -

50 -

40 -

30 -

20 -

10 -

0 -

Difficulty

Level

Question Number

CAT Graph – Is

Recovery

Possible? Computing Your Score Is Recovery Possible



Recovery from one or two

early errors is possible.

1 2 3 4 5 6 7 8 . . . 36 37

1 2 3 4 5 6 7 8 . . . 36 37

100 -

90 -

80 -

70 -

60 -

50 -

40 -

30 -

20 -

10 -

0 -

Difficulty

Level

Question Number

Why might this happen?

Solidify your FOUNDATION and

TIMING.

Timing issues or careless mistakes

will drag you down!

CAT Graph –

“Holes” in the

Foundation CAT Graph – Recovery is Possible

Computing Your Score What to Avoid

1 2 3 4 . . . 33 34 35 36 37

100 -

90 -

80 -

70 -

60 -

50 -

40 -

30 -

20 -

10 -

0 -

Difficulty

Level

Question Number

Poor allocation of time

leaves points on the table.

Computing Your Score What to Avoid

Miss too many questions

below your level and

your score will suffer.

37 Question Section Score (percentile)

Avoid the End-of-Section Dip

Finito

37 answered

0 random guesses

(but still guesses!)

70th NICE PACING!

Randy

32 answered

5 random guesses

(1 right, 4 wrong)

64th PENALTY

Blankman

32 answered

5 left blank 55th HUGE PENALTY

Every question has

a difficulty rating. How?

Every question has been

tested on 1000-2000

previous test-takers.

A number of your

questions will be

experimental.

DON’T GET HUNG UP

ON ANY ONE PROBLEM

(it may be experimental!)

Experimental Questions

Difficulty?

Hard

50th percentile Easy


1

You’ll learn...




What is "Good" Pacing?

0 min. 75 min.

0 min. 3 min.

make more careless errors

not enough time to understand

jeopardize other problems

excessive time ≠ better accuracy

Sweet Spot Too Fast Too Slow

2.5 min.

45 sec.

Time per question Start End

How long is too long on one question?

Prepare to Face the GMAT

Build Your Foundation 1

Assess Your Progress 2

Attack Your Weaknesses 3

Develop Your Game Plan 4

• content (e.g., geometry)

• approach (e.g., DS)

• time management

Build Your Foundation

Build Your Foundation 1

Assess Your Progress 2

Attack Your Weaknesses 3

Develop Your Game Plan 4

LEARN CONTENT &

APPROACHES

• class

• strategy guides

RUN TIMING DRILLS

• single problems timed

• timed blocks

APPLY AND REPEAT

• OG problems by

content area

During the course…

Learn:

• GMAT Mindset

• Timing

• Content

Practice:

• Strategy Guides

• OG Problems

• Practice CATs

DAY

1 TEST

DAY Plan Review Learn & Practice

Your GMAT Timeline

100 -

90 -

80 -

70 -

60 -

50 -

40 -

30 -

20 -

10 -

0 -

Difficulty

Level

Computing Your Score Improving in Adaptive Testing

Range of question

difficulty level

Easier for you

Harder for you

Estimated

Ability

7 Practice Habits of Highly Effective Students

1. Time yourself on OG problems. Make decisions the

way you’d want to make them on the real test.

2. Questions in Strategy Guides and Official Guides:

check answer after each problem.

3. Use consistent scrap paper techniques.

4. Track your work.

5. Employ short and frequent study sessions.

6. Review your work for EVERY problem.

7. Seriously, review your work. Focus on quality over quantity.

Build Your

Foundation 1

Assess Your

Progress 2

Attack Your

Weaknesses 3

Develop Your

Game plan 4

Practice Habits

Course Overview

Resources & Planning

What does the course cover?

What are my primary resources?

Which resources will help me assess my progress?

What else should I do?

Course Overview 1

GMAT Structure

Argument

Essay

Integrated

Reasoning Quant Verbal

B

R

E

A

K

B

R

E

A

K

F

I

N

I

S

H

S

T

A

R

T

Scoring: 0-6 1-8 0-51 0-51

1 essay 12 questions 37 questions

Problem Solving

Data Sufficiency

41 questions

Sentence Correction

Critical Reasoning


Combine to 200-800

30 min. 75 min. 75 min. 30 min. 8 min. 8 min. Time:

Session Quant Sentence

Correction

Critical

Reasoning

Reading

Comp

Essay /

IR

Preparing for

the GMAT

Practice

Exams

1 DS Methods Methods Build Your

Foundation

2 FDP Mechanics Subject-Verb Reading 1st by

Session 2

3 FDP Strategies Modifiers Detail

Questions

4 Algebra 1

Argument

Structure &

Methods

Essay /

IR

5 Algebra 2 Parallelism Find the

Assumption

6 Word Problem

Stories Comparisons

Challenging

RC Prep for CAT 2

7 Word Problem

Statistics

Strengthen/

Weaken the

Argument

Assess Your

Progress

2nd before

Session 7

8 Geometry Pronouns Evaluate the

Argument

9 Number

Properties Verbs Evidence Family

Develop Your

Gameplan

3rd after

Session 9

The Big Picture





Course Overview

o 35 Fully Interactive Lessons taught by

Manhattan Prep instructors

GMAT INTERACT

o Post-Exam Assessment

o Post-Course Assessment

ASSESSMENTS

o 6 Manhattan Prep CATs

PRACTICE TESTS

o GMAT Write o 2 GMATPrep® exams

o Online Syllabus

o GMAT Navigator

STUDY TOOLS

BOOKS

Foundations Test Booklet

10 Strategy Guides

GMAC Official Guide

Your Resource Map Welcome Guide

Download the

Welcome Guide

Your Online Syllabus

Same start for everyone

5-10 hours of homework/week

Options for further work

Based on your strengths &

weaknesses (and availability)

Follow Each Week Class Syllabus

Online or

Print

Click on sections and subsections

to see your specific assignments

Whit: what do you think about

making this image the FDPs

homework, not FoM? Gives

teachers something a little more

advanced to talk about, shows a

link to an online assignment, etc.





Course Overview

3 are assigned in the Syllabus over

the next 9 weeks

Do them all timed!

• Mimic the real test

Assigned Throughout 6 Practice CATs

Do 3 timed exams to qualify for:

• Post-Course Assessment

• Post-Exam Assessment





Course Overview

• Areas covered:

– Time-management

– Study organization

– How to study

• Expert advice written by Manhattan Prep instructors

Expert Advice GMAT Roadmap

• Filled with advice to get you from

Day 1 to the Big Event.

• Assigned in the Syllabus each week

• Do a little every day. Put pen to paper.

• If you fall behind, fill in the gaps later. Make it a Habit

• Tackle the Do This homework every week. Use the

Syllabus

• Spend more time on your weaker areas.

• Don’t completely ignore the other areas.

Focus on

Weaknesses

• Use GMAT Navigator to record your work. Do your OGs

• Get used to the feel of real GMAT questions.

Commit Each Week Homework

You Decide – Your Timeline

When will you be ready?

Timeline 2

9 Weeks 16+

Days

Completing less homework each week

or aiming for a very high score increase EXAM 1 EXAM 2

1 - 3 Months

Additional

Study

Timeline 1

9 Weeks 16+

Days

Completing Do This homework each week

EXAM 1 EXAM 2

2 - 3

wks

Keys to Your Success

1 Attend Class & Ask Questions.

2 Do the Work & Review.

3 Have Fun!

Optional Slides Optional Slides

Lesson Review GMAT Interact

• Interactive lessons

• Use to reinforce lessons from this class

• Use if you have to miss class

Lesson Review GMAT Interact

Record Your Work GMAT Navigator

Use with the Official Guide

Track

performance

Review our

explanations,

in print or

video

View

statistics

+ Real GMAT q's, algorithm

Use these exams in the final weeks

of preparation

Two free practice exams

- No explanations, some analysis

Question set builder

+ Can do question sets on-screen

+ Select a mix of type and difficulty

+ 90 free questions; can add 400+

fresh q's by buying Quant Pack 1

Extra Practice Problems GMATPrep® www.mba.com

• Assess progress

Post-Exam Assessment

To access: Complete the 3 timed practice exams, including #1

by next class. See the Welcome Guide for details.

After the course...

After the exam...

Want pre-exam

guidance?

Didn’t get the score

you wanted?

Phone consultation

Post-Course Assessment

• Diagnose issues

• Plan next steps

Both with

specially

trained

instructors

Online meeting

• Plot your game plan

Personalized Feedback Assessments

ds methods - amazon s3...computing your score pop quiz difficulty level question number student 1...

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