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Important Note:�Corrections are available�for�the original printing of�The Official Guide for GMAT Review 2017�(9781119253884).�For customers who have purchased this product, you can access an errata (correction) document as well as additional information at: http://wileyactual.com/gmat� A new, fully�corrected version�of the Guide�(9781119347620)�is available for preorder now, shipping at the end of August.
The premier GMAT review guide for fully personalized preparation
The Official Guide for GMAT Review 2017 is the ultimate preparation kit from the makers of the GMAT exam. You'll find success strategies and test-taking tips from the experts at The Graduate Management Admission Council, along with in-depth grammar and math review—but you'll also find so much more. This book is designed to provide you with a targeted preparation experience customized to your strengths and weaknesses. A diagnostic test helps you prioritize your study time, while the companion website (gmat.wiley.com) allows you to create your own practice tests focused on the areas you need to improve. Over 900 past exam questions are answered with explanations, and actual example essays are included with scoring information to help you plan your approach in advance. This new 2017 edition contains never-before-seen material, including 61 quantitative, 61 verbal, and 8 integrated reasoning questions with full explanations to enhance your level of preparation.
The GMAT's scope and importance make it a high-pressure exam. Don't waste valuable time going over what you already know. This book helps you discover what you don't know, and tailor your review to turn weaknesses into strengths.
- Develop a personalized review plan based on a 100-question diagnostic test to help make the most of your study time
- Read actual essay topics, sample responses, and scoring information
- Review over 900 exam questions,�61 quantitative, 61 verbal, and 8 online integrated reasoning questions
- Comprehensive grammar and math review
- Questions organized in order of difficulty to focus your study
Confidence is key, but actual knowledge is what drives a high score. Thorough preparation is the most valuable advantage you can have on the GMAT, and The Official Guide for GMAT Review 2017 delivers a personalized review plan tailored to you.
- Sales Rank: #508638 in Books
- Published on: 2016-06-07
- Original language: English
- Number of items: 1
- Dimensions: 10.90" h x 1.50" w x 8.50" l, .0 pounds
- Binding: Paperback
- 864 pages
From the Back Cover
- Includes 130 never-before-seen questions
- Over 900 questions from past exams with answer explanations
- Create your own practice sets online at gmat.wiley.com
- Includes a diagnostic test, study tips, and test-taking strategies
THE OFFICIAL GUIDE FOR GMAT REVIEW 2017
The premier source of practice questions, The Official Guide for GMAT Review 2017 helps you identify areas of strength and customize your study plan.
Here's what you'll find inside:
- 900+ questions including 61 new verbal, 61 new quantitative, and 8 new online integrated reasoning questions with answer explanations
- Access to a customizable question bank at gmat.wiley.com
- A diagnostic test to help you get the most out of your study time
- Comprehensive grammar and math review
- Actual essay topics, sample responses, and scoring information
- Questions organized in order of difficulty to focus your study
Visit mba.com, the official website of the GMAT, your one-stop site for preparing for the GMAT exam and applying to business school.
About the Author
The Graduate Management Admissions Council (GMAC) is the association of leading graduate business schools around the world. GMAC's mission is to meet the needs of business schools and students through a wide array of products, services, and programs, and the organization serves as a primary resource of research and information about quality graduate management education. GMAC is the owner and administrator of the Graduate Management Admissions Test (GMAT). Created in 1954, the GMAT is the first and only standardized test specifically designed for graduate business and management programs. Available in over 100 countries, it is the global standard for entry to the MBA degree course. Currently about 2,100 schools and 5,900 programs have adopted the GMAT, and the test is taken approximately 230,000 times annually.
Most helpful customer reviews
3 of 3 people found the following review helpful.
DO NOT BUY. Wait until later this year.
By J. Quinteros
DO NOT BUY. The current version has many mistakes that are being fixed by the publisher.
Copy and pasted from the publisher's website: [...]
A note from GMAC and Wiley
We recently released The Official Guide for GMAT Review, 2017 and we have discovered that this first version contains a number of typos that occurred during the publishing process. We realize that these errors may make it difficult to understand certain content and could affect the study experience for the GMAT exam. To resolve this issue, we have created an up-to-date errata document that candidates can reference for corrections. We will also provide a free replacement copy of The Official Guide for GMAT Review, 2017 when the corrected version is ready for distribution.
Both the Graduate Management Admission Council (GMAC) and Wiley deeply apologize for the inconvenience these errors may have caused individuals studying for the exam. We are committed to high-quality publication standards, and moving forward we will make every effort to ensure that our study products are superior to enable the best practice for the GMAT exam.
22 of 25 people found the following review helpful.
GMAT Genius’ Detailed Analysis of the 2017 Official Guide with Question Categorization
By GMAT Genius
August 2016 Update – Due to numerous errors in the original printing of the 2017 GMAT Official Guide, this edition has been retired and replaced with a new version available here: The Official Guide for GMAT Review 2017 with Online Question Bank and Exclusive Video. The new version is identical to this version, except for correction of the printing errors.
Founded by a Stanford MBA, GMAT Genius offers the highest quality GMAT preparation services to GMAT aspirants worldwide. Our mission is crystal-clear: to help you achieve GMAT success. The publisher of the GMAT Official Guides asked GMAT Genius to help it improve the online versions of the Official Guides, and GMAT Genius has worked closely with the Official Guide publisher in the weeks leading up to the release of the 2017 editions. We have thoroughly analyzed the 2017 Official Guides and want to share our insights with you. Feel free to read our detailed analysis or skip down to our conclusions.
OVERVIEW of OFFICIAL GUIDE
The Official Guides for GMAT Review contain retired real GMAT questions, and are an essential component of your GMAT preparations. The GMAC places questions in order of increasing difficulty, based on its assessment of difficulty. This book has no overlap of practice questions with the Quant and Verbal Official Guides.
The 2017 edition contains 131 new questions out of the 957 total questions (including Integrated Reasoning). Excluding the 100 questions in the Diagnostic Exam section of the book, the new questions represent just over 15% new content. These are new questions that we have not encountered before; they are not questions recycled from older GMAC resources. One formatting change in the 2017 edition is that all questions (other than Integrated Reasoning) are now numbered from 1 to 907, whereas previously each section was numbered independently.
PROBLEM SOLVING
This guide contains 254 Problem Solving questions, including the 24 Problem Solving questions in the Diagnostic Exam portion of the book. The GMAC classifies question difficulty into three categories as follows:
Easy – 82 (32%, 19 more than 2016)
Medium – 55 (22%, 5 fewer)
Hard – 117 (46%, 14 fewer)
The Problem Solving section contains 36 new questions, with difficulty of Easy / Medium / Hard as follows: 18 / 8 / 10. This is in lieu of 36 questions from the 2016 edition that have been removed, with difficulty of Easy / Medium / Hard as follows: 7 / 5 / 24. In addition, 8 Medium questions have been downgraded to Easy.
GMAT Genius classifies question difficulty into five categories. Our assessment of this section skews significantly easier, and contains notable differences from the GMAC’s assessment. Our difficulty assessment is only 60.6% correlated with the GMAC’s assessment, demonstrating tremendous subjectivity involved in assessing question difficulty. Here’s our breakdown:
Super Easy – 20 (8%, 2 more than 2016)
Easy – 68 (27%, 2 more)
Medium – 109 (43%, 5 fewer)
Hard – 40 (16%, 1 more)
Very Hard – 17 (7%, same)
Although math questions often entail multiple math concepts, GMAT Genius classifies questions based on our assessment of the primary math concept. We break down the 254 Problem Solving questions as follows:
Arithmetic - Basic: 7 (2.8%, 2 more than 2016)
Arithmetic - Absolute Value: 4 (1.6%, same)
Arithmetic - Divisibility/Factors/Multiples: 15 (5.9%, 1 fewer)
Arithmetic - Exponents & Roots: 22 (8.7%, same)
Arithmetic - Fractions & Ratios: 30 (11.8%, 3 fewer)
Arithmetic - Percents: 20 (7.9%, 1 fewer)
Arithmetic - Pos/Neg & Odd/Even: 1 (0.4%, same)
Arithmetic - Primes: 4 (1.6%, same)
Algebra - Inequalities: 5 (2%, 2 more)
Algebra - Linear Equations: 13 (5.1%, 1 fewer)
Algebra - Quadratics: 8 (3.1%, same)
Algebra - Simultaneous Equations: 7 (2.8%, same)
Algebra - Variables in Answers: 7 (2.8%, 2 more)
Geometry - Circles: 5 (2%, same)
Geometry - Coordinate: 8 (3.1%, 1 fewer)
Geometry - Rectangles: 7 (2.8%, same)
Geometry - Triangles: 6 (2.4%, same)
Geometry - Other: 7 (2.8%, same)
Statistics - Averages: 19 (7.5%, 1 fewer)
Statistics - Other: 6 (2.4%, 2 more)
Word Problems - Combinatorics: 7 (2.8%, 1 more)
Word Problems - Functions & Sequences: 11 (4.3%, same)
Word Problems - Groups/Sets: 7 (2.8%, 1 fewer)
Word Problems - Probability: 8 (3.1%, same)
Word Problems - Revenue/Profit/Interest: 8 (3.1%, same)
Word Problems - Rate & Work: 12 (4.7%, same)
Here’s a list of the 36 new Problem Solving questions: 2, 5, 7, 13, 19, 23, 32, 44, 45, 47, 50, 53, 62, 68, 69, 70, 71, 72, 88, 89, 91, 96, 100, 109, 116, 120, 123, 127, 128, 132, 140, 152, 192, 194, 201, 209
Here’s a list of the 230 Problem Solving questions, excluding those in the Diagnostic Exam, categorized by primary math concept:
Arithmetic - Basic: 2, 18, 33, 42, 140, 218
Arithmetic - Absolute Value: 21, 22, 57, 183
Arithmetic - Divisibility/Factors/Multiples: 40, 48, 62, 105, 108, 119, 122, 134, 158, 159, 161, 190, 225
Arithmetic - Exponents & Roots: 10, 28, 58, 61, 63, 77, 95, 128, 139, 145, 163, 164, 185, 188, 196, 204, 208, 211, 223, 230
Arithmetic - Fractions & Ratios: 3, 23, 25, 32, 35, 41, 52, 55, 64, 69, 76, 81, 86, 107, 113, 115, 118, 135, 136, 144, 147, 167, 178, 182, 189, 198, 215, 220, 222
Arithmetic - Percents: 1, 7, 9, 15, 30, 34, 60, 68, 72, 73, 75, 79, 89, 91, 102, 133, 153, 156, 165, 202
Arithmetic - Pos/Neg & Odd/Even: 54
Arithmetic - Primes: 168, 200
Algebra - Inequalities: 45, 67, 100, 172, 229
Algebra - Linear Equations: 4, 12, 27, 59, 70, 92, 94, 104, 110, 116, 143, 162, 171
Algebra - Quadratics: 46, 78, 93, 109, 137, 152, 177, 227
Algebra - Simultaneous Equations: 13, 19, 31, 83, 131, 173
Algebra - Variables in Answers: 6, 44, 50, 53, 125, 151, 180
Geometry - Circles: 80, 106, 127, 160, 219
Geometry - Coordinate: 8, 49, 66, 84, 90, 170, 212, 217
Geometry - Rectangles: 16, 17, 37, 51, 82, 138, 197
Geometry - Triangles: 24, 39, 126, 157
Geometry - Other: 29, 97, 142, 216
Statistics - Averages: 14, 20, 26, 38, 88, 99, 120, 121, 130, 141, 148, 155, 176, 184, 206, 214, 228
Statistics - Other: 47, 71, 98, 150, 192, 199
Word Problems - Combinatorics: 129, 166, 169, 174, 186, 209
Word Problems - Functions & Sequences: 43, 74, 149, 175, 187, 191, 193, 201, 207, 224
Word Problems - Groups/Sets: 101, 103, 132, 203, 226
Word Problems - Probability: 11, 123, 146, 154, 194, 221
Word Problems - Revenue/Profit/Interest: 36, 112, 117, 124, 181, 205, 210
Word Problems - Rate & Work: 5, 56, 65, 85, 87, 96, 111, 114, 179, 195, 213
DATA SUFFICIENCY
This guide contains 198 Data Sufficiency questions, including the 24 Data Sufficiency questions in the Diagnostic Exam portion of the book. The GMAC classifies question difficulty into three categories as follows:
Easy – 50 (25%, 4 more than 2016)
Medium – 51 (26%, 10 more)
Hard – 97 (49%, 14 fewer)
The Data Sufficiency section contains 26 new questions, with difficulty of Easy / Medium / Hard as follows: 9 / 12 / 15. This is in lieu of 26 questions from the 2016 edition that have been removed, with difficulty of Easy / Medium / Hard as follows: 5 / 2 / 19. The GMAC has not reclassified the difficulty of any question.
GMAT Genius classifies question difficulty into five categories. Our assessment skews significantly easier, and contains notable differences from the GMAC’s assessment. Our difficulty assessment is only 59.2% correlated with the GMAC’s assessment, demonstrating tremendous subjectivity involved in assessing question difficulty. Here’s our breakdown:
Super Easy – 7 (4%, 1 fewer than 2016)
Easy – 50 (25%, same)
Medium – 92 (46%, 1 fewer)
Hard – 41 (21%, 2 more)
Very Hard – 8 (4%, same)
Although many math questions entail multiple math concepts, GMAT Genius classifies questions based on our assessment of the primary math concept. We break down the 198 Data Sufficiency questions as follows:
Arithmetic - Basic: 13 (6.6%, 3 more than 2016)
Arithmetic - Divisibility/Factors/ Multiples: 8 (4%, 1 more)
Arithmetic - Exponents & Roots: 14 (7.1%, 1 more)
Arithmetic - Fractions & Ratios: 12 (6.1%, same)
Arithmetic - Percents: 16 (8.1%, 1 more)
Arithmetic - Pos/Neg & Odd/Even: 9 (4.5%, 3 fewer)
Arithmetic - Primes: 1 (0.5%, 1 more)
Algebra - Inequalities: 10 (5.1%, same)
Algebra - Linear Equations: 9 (4.5%, 1 more)
Algebra - Quadratics: 4 (2%, 2 fewer)
Algebra - Simultaneous Equations: 9 (4.5%, 1 fewer)
Geometry - Circles: 5 (2.5%, 2 fewer)
Geometry - Coordinate: 7 (3.5%, same)
Geometry - Rectangles: 4 (2%, same)
Geometry - Triangles: 10 (5.1%, 2 more)
Geometry - Other: 6 (3%, 1 more)
Statistics - Averages: 14 (7.1%, same)
Statistics - Other: 11 (5.6%, 1 more)
Word Problems - Functions & Sequences: 5 (2.5%, same)
Word Problems - Groups/Sets: 11 (5.6%, 1 fewer)
Word Problems - Probability: 3 (1.5%, same)
Word Problems - Revenue/Profit/Interest: 8 (4%, 3 fewer)
Word Problems - Rate & Work: 9 (4.5%, same)
Here’s a list of the 26 new Data Sufficiency questions: 231, 237, 243, 252, 254, 255, 258, 259, 262, 274, 275, 278, 283, 288, 291, 294, 304, 305, 310, 315, 316, 325, 327, 332, 347, 259
Here’s a list of the 174 Data Sufficiency questions, excluding those in the Diagnostic Exam, categorized by primary math concept:
Arithmetic - Basic: 252, 265, 269, 274, 288, 294, 315, 319, 320, 337, 363, 387, 403
Arithmetic - Divisibility/Factors/ Multiples: 275, 314, 323, 346, 389
Arithmetic - Exponents & Roots: 240, 243, 249, 273, 277, 316, 327, 338, 356, 361, 398
Arithmetic - Fractions & Ratios: 256, 268, 297, 298, 299, 312, 343, 359, 371, 386, 402, 404
Arithmetic - Percents: 239, 253, 258, 264, 276, 290, 305, 306, 308, 311, 318, 325, 353, 382, 395
Arithmetic - Pos/Neg & Odd/Even: 255, 266, 270, 293, 300, 330, 369, 399
Arithmetic - Primes: 347
Algebra - Inequalities: 246, 279, 301, 307, 324, 345, 349, 352, 401
Algebra - Linear Equations: 234, 247, 272, 278, 295, 339, 341
Algebra - Quadratics: 271, 310, 333, 357
Algebra - Simultaneous Equations: 233, 245, 292, 309, 313, 332, 344, 351
Geometry - Circles: 260, 360, 373, 376
Geometry - Coordinate: 235, 261, 317, 335, 379, 384
Geometry - Rectangles: 286, 296, 358
Geometry - Triangles: 231, 237, 262, 334, 342, 370, 380, 383, 396
Geometry - Other: 259, 289, 329, 362, 385, 400
Statistics - Averages: 281, 331, 336, 348, 354, 364, 368, 375, 378, 390, 394, 397
Statistics - Other: 242, 244, 284, 304, 322, 367, 381, 392, 393
Word Problems - Functions & Sequences: 241, 257, 355, 365, 374
Word Problems - Groups/Sets: 232, 248, 254, 280, 291, 302, 321, 372, 388
Word Problems - Probability: 236, 283, 287
Word Problems - Revenue/Profit/Interest: 250, 263, 267, 282, 303, 340, 391
Word Problems - Rate & Work: 238, 251, 285, 326, 328, 350, 366, 377
SENTENCE CORRECTION
This book contains 158 Sentence Correction questions, including the 18 Sentence Correction questions in the Diagnostic Exam portion of the book. The GMAC classifies question difficulty into three categories as follows:
Easy – 35 (22%, same as 2016)
Medium – 50 (32%, 5 more)
Hard – 73 (46%, 5 fewer)
The Sentence Correction section contains 21 new questions, with difficulty of Easy / Medium / Hard as follows: 7 / 9 / 5. This is in lieu of 21 questions from the 2016 edition that have been removed, with difficulty of Easy / Medium / Hard as follows: 7 / 4 / 10. The GMAC has not reclassified the difficulty of any question.
GMAT Genius classifies question difficulty into five categories. Our assessment skews noticeably easier, and contains notable differences from the GMAC. Our difficulty assessment is only 55.2% correlated with the GMAC’s assessment, clearly showing that there is subjectivity involved in assessing question difficulty. Here’s our breakdown:
Super Easy – 3 (2%, 2 more than 2016)
Easy – 44 (28%, 5 fewer)
Medium – 70 (44%, 6 more)
Hard – 34 (22%, 4 fewer)
Very Hard – 7 (4%, 1 more)
Although Sentence Correction questions typically entail multiple grammar concepts (as described on our website), GMAT Genius classifies questions based on our assessment of the primary tested concept. We classify the 158 Sentence Correction questions as follows:
Verb Agreement: 18 (11%, same than 2016)
Verb Tense: 22 (14%, same)
Pronoun Ambiguity: 10 (6%, 1 fewer)
Pronoun Agreement: 4 (3%, 2 more)
Parallel Construction: 52 (33%, 4 more)
Misplaced Modifiers: 17 (11%, 2 more)
Idioms: 7 (4%, 1 fewer)
Comparison & Quantity: 11 (7%, 3 fewer)
Expression & Meaning: 17 (11%, 3 fewer)
Here’s a list of the 21 new Sentence Correction questions: 668, 669, 683, 684, 685, 688, 696, 697, 703, 704, 705, 724, 725, 738, 739, 740, 747, 762, 771, 799, 803
Here’s a list of the 140 Sentence Correction questions, excluding those in the Diagnostic Exam, categorized by primary grammar concept:
Verb Agreement: 668, 675, 678, 691, 705, 709, 720, 749, 750, 760, 771, 789, 793, 794, 800, 807
Verb Tense: 676, 683, 693, 700, 706, 710, 721, 723, 731, 737, 740, 747, 751, 755, 764, 767, 774, 780, 803, 804
Pronoun Ambiguity: 670, 718, 776, 777, 779, 781
Pronoun Agreement: 685, 738, 763, 765
Parallel Construction: 669, 671, 681, 684, 686, 687, 690, 692, 696, 698, 701, 708, 712, 714, 715, 724, 726, 728, 730, 732, 734, 735, 736, 741, 742, 743, 748, 752, 754, 756, 759, 761, 762, 766, 768, 778, 782, 788, 790, 795, 799, 801, 802, 806
Misplaced Modifiers: 682, 703, 704, 707, 711, 716, 717, 722, 729, 739, 744, 746, 787, 791, 797, 798
Idioms: 672, 694, 697, 757, 786, 796
Comparison & Quantity: 677, 679, 689, 702, 758, 770, 772, 773, 775, 792, 805
Expression & Meaning: 673, 674, 680, 688, 695, 699, 713, 719, 725, 727, 733, 745, 753, 769, 783, 784, 785
CRITICAL REASONING
This book contains 141 Critical Reasoning questions, including the 17 Critical Reasoning questions in the Diagnostic Exam portion of the book. The GMAC classifies question difficulty into three categories as follows:
Easy – 41 (29%, 1 more than 2016)
Medium – 45 (32%, same)
Hard – 55 (39%, 1 fewer)
The Critical Reasoning section contains 19 new questions, with difficulty of Easy / Medium / Hard as follows: 4 / 11 / 4. This is in lieu of 19 questions from the 2016 edition that have been removed, with difficulty of Easy / Medium / Hard as follows: 3 / 11 / 5. The GMAC has not reclassified the difficulty of any question.
GMAT Genius classifies question difficulty into five categories. Our assessment skews slightly easier, but contains notable differences from the GMAC. Our difficulty assessment is 73.2% correlated with the GMAC’s assessment, clearly indicating subjectivity involved in assessing question difficulty. Here’s our breakdown:
Super Easy – 0 (0%, same as 2016)
Easy – 45 (32%, 1 more)
Medium – 50 (35%, 1 fewer)
Hard – 33 (23%, 1 fewer)
Very Hard – 13 (9%, 1 more)
We have grouped the questions based on the question type categorization that GMAT Genius uses for Critical Reasoning (as described on our website). We break down the 141 Critical Reasoning questions as follows:
Weaken: 27 (19%, 2 more than 2016)
Strengthen: 29 (21%, 3 more)
Assumption: 14 (10%, 2 fewer)
Reasoning: 5 (4%, 3 fewer)
Conclusion: 9 (6%, 2 more)
Explain: 17 (12%, 1 more)
Evaluate: 16 (11%, 2 fewer)
Boldface: 9 (6%, same)
Complete the Passage: 15 (11%, 1 fewer)
Here’s a list of the 19 new Critical Reasoning questions: 546, 549, 562, 571, 582, 587, 592, 599, 607, 610, 612, 616, 617, 618, 619, 627, 629, 661, 666
Here’s a list of the 124 Critical Reasoning questions, excluding those in the Diagnostic Exam, categorized by CR question type:
Weaken: 548, 574, 584, 589, 600, 606, 617, 618, 620, 621, 623, 627, 629, 640, 643, 644, 654, 658, 663, 666, 667
Strengthen: 545, 546, 547, 550, 560, 564, 568, 569, 571, 575, 580, 592, 594, 595, 598, 599, 602, 604, 610, 612, 626, 639, 647, 649, 656, 660, 665
Assumption: 552, 581, 585, 590, 607, 608, 616, 628, 635, 642, 650, 655, 657
Reasoning: 559, 565, 578, 597, 633
Conclusion: 544, 582, 591, 619, 645, 653, 661
Explain: 549, 551, 554, 555, 557, 566, 567, 587, 596, 614, 615, 622, 630, 648, 664
Evaluate: 553, 556, 558, 570, 572, 579, 586, 631, 632, 634, 637, 641, 662
Boldface: 563, 573, 624, 625, 636, 638, 646, 651, 659
Complete the Passage: 561, 562, 576, 577, 583, 588, 593, 601, 603, 605, 609, 611, 613, 652
READING COMPREHENSION
This book contains 156 Reading Comprehension questions across 31 passages, including the 17 Reading Comprehension questions in 3 passages in the Diagnostic Exam portion of the book. The GMAC classifies question difficulty into three categories as follows:
Easy – 51 (33%, 3 fewer than 2016)
Medium – 73 (47%, 8 more)
Hard – 32 (21%, 5 fewer)
The Reading Comprehension section contains 21 new questions in 5 passages, with difficulty of Easy / Medium / Hard as follows: 13 / 3 / 5. This is in lieu of 21 questions in 3 passages from the 2016 edition that have been removed, with difficulty of Easy / Medium / Hard as follows: 5 / 16 / 0. In this edition, the GMAC has upgraded 11 Easy questions and downgraded 10 Hard questions to Medium difficulty.
GMAT Genius classifies question difficulty into five categories. Whereas the GMAC assigns the same difficulty to all questions for a given passage (except in the Diagnostic Exam section), GMAT Genius assesses the difficulty of each question individually. Our assessment skews slightly harder, but contains notable differences from the GMAC. Our difficulty assessment is only 46.1% correlated with the GMAC’s assessment, in large part due to different difficulty assessment methodologies. Here’s our breakdown:
Super Easy – 6 (4%, 1 more than 2016)
Easy – 33 (21%, 4 more)
Medium – 67 (43%, 7 fewer)
Hard – 40 (26%, same)
Very Hard – 10 (6%, 2 more)
We have grouped the questions based on the question type categorization that GMAT Genius uses for Reading Comprehension (as described on our website). We break down the 156 Reading Comprehension questions as follows:
Primary Purpose: 24 (15%, same than 2016)
Author's Tone: 10 (6%, same)
Organization: 4 (3%, same)
Function: 18 (12%, 2 fewer)
Specific Reference: 38 (24%, 3 fewer)
Inference: 50 (32%, 2 more)
Critical Reasoning: 12 (8%, 3 more)
Here’s a list of the 21 new Reading Comprehension questions: 415 to 423, 427 to 430, 460 to 462, 529 to 533
INTEGRATED REASONING
This Official Guide includes online access to 50 Integrated Reasoning practice questions. The IR set includes 8 new questions that we have not seen before, replacing 8 questions that were in the 2016 edition. The 50 questions consist of the following four types:
Multi-Source Reasoning – 18 (3 changed)
Table Analysis – 6 (1 changed)
Graphics Interpretation – 10 (1 changed)
Two-Part Analysis – 16 (3 changed)
For the first time with IR in the Official Guides, the GMAC has assigned a difficulty rating to each question. Each type has difficulty of Easy / Medium / Hard as follows:
Multi-Source Reasoning – 6 / 6 / 6
Table Analysis – 2 / 2 / 2
Graphics Interpretation – 3 / 4 / 3
Two-Part Analysis – 5 / 6 / 5
Total – 16 / 18 / 16
For IR, GMAT Genius classifies question difficulty into the same three categories. Except for Two-Part Analysis, our assessment skews significantly easier, and contains notable differences from the GMAC. Our difficulty assessment is only 25.3% correlated with the GMAC’s assessment, clearly showing that there is subjectivity involved in assessing question difficulty. Here’s our breakdown of Easy / Medium / Hard:
Multi-Source Reasoning – 9 / 8 / 1
Table Analysis – 2 / 4 / 0
Graphics Interpretation – 3 / 5 / 2
Two-Part Analysis – 1 / 9 / 6
Total – 15 / 26 / 9
Here’s a list of the 8 new Integrated Reasoning questions: 9, 10, 11, 21, 28, 35, 41, 43
ONLINE INTERFACE
The book includes an access code (see inside back cover) that provides 12-month usage of an online version of this Official Guide. Since the GMAT is a computer-based test, we believe that it is advisable to work though the questions online. We recommend that you use Exam Mode rather than Practice Mode, since we recommend that students practice using timed question sets that replicate test day conditions.
The online practice interface has improved significantly from last year’s version. The publisher implemented most of our recommendations. In particular, note the following improvements:
1) The test interface more closely resembles GMATPrep.
2) Exam Mode is now default mode, and you cannot skip questions in Exam Mode.
3) The overview screen shows the number of questions answered and that remain unanswered, for each question type and difficulty level.
4) All questions now indicate the corresponding book number, for easier cross-referencing.
5) Integrated Reasoning is now incorporated into the main interface, rather than using a separate interface.
6) The system now has a significantly longer period before it logs-out your session.
7) All session timing is now fully accurate.
Our only significant concern with the online interface is that the system limits you to 10 saved sessions. Once you reach this limit, you must delete at least one saved session in order to keep practicing. But doing so puts all the questions from that saved session back into the unanswered question pool. As such, we recommend that you separately track which question types / difficulties you have already completed. Furthermore, we suggest completing all Easy questions in a maximum of 10 sessions, advancing to Medium questions in max 10 sessions, and finally focusing on the Hard questions in max 10 sessions towards the end of your prep.
If you have any suggestions for further improving the online interface, please let us know and we will pass your input on to the publisher of the Official Guides.
OTHER NOTES
The Official Guides are for practicing with real GMAT questions, not for learning the underlying concepts. The book contains a 40-page Math Review section that provides a very high-level overview of the math concepts tested on the GMAT. This math review will be highly inadequate except perhaps for the most advanced math students. Similarly, the brief introductions to the concepts tested on the verbal section are highly inadequate. We recommend that you use additional study materials to learn the math and verbal concepts.
Although all questions include answer explanations, many GMAT test takers are far from satisfied with these explanations. Math explanations can be brief and hard-to-understand for non-advanced students, and are sometimes convoluted or inefficient. Most GMAT test takers consider the Sentence Correction explanations quite cryptic. The Critical Reasoning and Reading Comprehension explanations, however, are reasonably good overall.
CONCLUSIONS
The Official Guide has three primary weaknesses, in our opinion:
1) An insufficient amount of difficult practice questions, particularly based on GMAT Genius’ assessment of difficulty
2) Math answer explanations that are too often either brief or convoluted and Sentence Correction explanations that are too cryptic
3) This particular version has numerous printing errors, as mentioned in the beginning of this review
Despite these flaws, the Official Guide is an essential source of GMAT practice. We believe that every GMAT aspirant must use the Official Guide (or a prior edition). For these reasons, we typically give the Official Guide a 5-star rating. Due to the numerous printing errors mentioned at the beginning of this review, however, we only give this edition 4-stars. For the best value, we recommend purchasing this book as part of The Official Guide to the GMAT Review 2017 Bundle + Question Bank + Video. If you already have the 2016 edition of this book, however, the replacement of 62 math questions and 61 verbal questions is not sufficient to make this book worth purchasing.
GMAT Genius provides extensive analysis of the Official Guides on the GMAT Genius blog at GMATgenius.com/blog/. Click on the category Official Guides. You will also find extensive free GMAT preparation advice on the GMAT Genius website at GMATgenius.com/gmat-preparation/. In addition, we offer the highest-quality private GMAT tutoring to students worldwide. We wish you tremendous success with the GMAT!
20 of 20 people found the following review helpful.
GMAT Genius’ Detailed Analysis of the 2017 Official Guide with Question Categorization
By GMAT Genius
Founded by a Stanford MBA, GMAT Genius offers the highest quality GMAT preparation services to GMAT aspirants worldwide. Our mission is crystal-clear: to help you achieve GMAT success. We have thoroughly analyzed the 2017 Official Guides and want to share our insights with you. Please note that this second edition corrects numerous errors that were contained in the original printing. Feel free to read our detailed analysis of the 2017 GMAT Official Guide or skip down to our conclusions.
OVERVIEW of OFFICIAL GUIDE
The Official Guides for GMAT Review contain retired real GMAT questions, and are an essential component of your GMAT preparations. The GMAC places questions in order of increasing difficulty, based on its assessment of difficulty. This book has no overlap of practice questions with the Quant and Verbal Official Guides.
The 2017 edition contains 131 new questions out of the 957 total questions (including Integrated Reasoning). Excluding the 100 questions in the Diagnostic Exam section of the book, the new questions represent just over 15% new content. These are new questions that we have not encountered before; they are not questions recycled from older GMAC resources. One formatting change in the 2017 edition is that all questions (other than Integrated Reasoning) are now numbered from 1 to 907, whereas previously each section was numbered independently.
PROBLEM SOLVING
This guide contains 254 Problem Solving questions, including the 24 Problem Solving questions in the Diagnostic Exam portion of the book. The GMAC classifies question difficulty into three categories as follows:
Easy – 82 (32%, 19 more than 2016)
Medium – 55 (22%, 5 fewer)
Hard – 117 (46%, 14 fewer)
The Problem Solving section contains 36 new questions, with difficulty of Easy / Medium / Hard as follows: 18 / 8 / 10. This is in lieu of 36 questions from the 2016 edition that have been removed, with difficulty of Easy / Medium / Hard as follows: 7 / 5 / 24. In addition, 8 Medium questions have been downgraded to Easy.
GMAT Genius classifies question difficulty into five categories. Our assessment of this section skews significantly easier, and contains notable differences from the GMAC’s assessment. Our difficulty assessment is only 60.6% correlated with the GMAC’s assessment, demonstrating tremendous subjectivity involved in assessing question difficulty. Here’s our breakdown:
Super Easy – 20 (8%, 2 more than 2016)
Easy – 68 (27%, 2 more)
Medium – 109 (43%, 5 fewer)
Hard – 40 (16%, 1 more)
Very Hard – 17 (7%, same)
Although math questions often entail multiple math concepts, GMAT Genius classifies questions based on our assessment of the primary math concept. We break down the 254 Problem Solving questions as follows:
Arithmetic - Basic: 7 (2.8%, 2 more than 2016)
Arithmetic - Absolute Value: 4 (1.6%, same)
Arithmetic - Divisibility/Factors/Multiples: 15 (5.9%, 1 fewer)
Arithmetic - Exponents & Roots: 22 (8.7%, same)
Arithmetic - Fractions & Ratios: 30 (11.8%, 3 fewer)
Arithmetic - Percents: 20 (7.9%, 1 fewer)
Arithmetic - Pos/Neg & Odd/Even: 1 (0.4%, same)
Arithmetic - Primes: 4 (1.6%, same)
Algebra - Inequalities: 5 (2%, 2 more)
Algebra - Linear Equations: 13 (5.1%, 1 fewer)
Algebra - Quadratics: 8 (3.1%, same)
Algebra - Simultaneous Equations: 7 (2.8%, same)
Algebra - Variables in Answers: 7 (2.8%, 2 more)
Geometry - Circles: 5 (2%, same)
Geometry - Coordinate: 8 (3.1%, 1 fewer)
Geometry - Rectangles: 7 (2.8%, same)
Geometry - Triangles: 6 (2.4%, same)
Geometry - Other: 7 (2.8%, same)
Statistics - Averages: 19 (7.5%, 1 fewer)
Statistics - Other: 6 (2.4%, 2 more)
Word Problems - Combinatorics: 7 (2.8%, 1 more)
Word Problems - Functions & Sequences: 11 (4.3%, same)
Word Problems - Groups/Sets: 7 (2.8%, 1 fewer)
Word Problems - Probability: 8 (3.1%, same)
Word Problems - Revenue/Profit/Interest: 8 (3.1%, same)
Word Problems - Rate & Work: 12 (4.7%, same)
Here’s a list of the 36 new Problem Solving questions: 2, 5, 7, 13, 19, 23, 32, 44, 45, 47, 50, 53, 62, 68, 69, 70, 71, 72, 88, 89, 91, 96, 100, 109, 116, 120, 123, 127, 128, 132, 140, 152, 192, 194, 201, 209
Here’s a list of the 230 Problem Solving questions, excluding those in the Diagnostic Exam, categorized by primary math concept:
Arithmetic - Basic: 2, 18, 33, 42, 140, 218
Arithmetic - Absolute Value: 21, 22, 57, 183
Arithmetic - Divisibility/Factors/Multiples: 40, 48, 62, 105, 108, 119, 122, 134, 158, 159, 161, 190, 225
Arithmetic - Exponents & Roots: 10, 28, 58, 61, 63, 77, 95, 128, 139, 145, 163, 164, 185, 188, 196, 204, 208, 211, 223, 230
Arithmetic - Fractions & Ratios: 3, 23, 25, 32, 35, 41, 52, 55, 64, 69, 76, 81, 86, 107, 113, 115, 118, 135, 136, 144, 147, 167, 178, 182, 189, 198, 215, 220, 222
Arithmetic - Percents: 1, 7, 9, 15, 30, 34, 60, 68, 72, 73, 75, 79, 89, 91, 102, 133, 153, 156, 165, 202
Arithmetic - Pos/Neg & Odd/Even: 54
Arithmetic - Primes: 168, 200
Algebra - Inequalities: 45, 67, 100, 172, 229
Algebra - Linear Equations: 4, 12, 27, 59, 70, 92, 94, 104, 110, 116, 143, 162, 171
Algebra - Quadratics: 46, 78, 93, 109, 137, 152, 177, 227
Algebra - Simultaneous Equations: 13, 19, 31, 83, 131, 173
Algebra - Variables in Answers: 6, 44, 50, 53, 125, 151, 180
Geometry - Circles: 80, 106, 127, 160, 219
Geometry - Coordinate: 8, 49, 66, 84, 90, 170, 212, 217
Geometry - Rectangles: 16, 17, 37, 51, 82, 138, 197
Geometry - Triangles: 24, 39, 126, 157
Geometry - Other: 29, 97, 142, 216
Statistics - Averages: 14, 20, 26, 38, 88, 99, 120, 121, 130, 141, 148, 155, 176, 184, 206, 214, 228
Statistics - Other: 47, 71, 98, 150, 192, 199
Word Problems - Combinatorics: 129, 166, 169, 174, 186, 209
Word Problems - Functions & Sequences: 43, 74, 149, 175, 187, 191, 193, 201, 207, 224
Word Problems - Groups/Sets: 101, 103, 132, 203, 226
Word Problems - Probability: 11, 123, 146, 154, 194, 221
Word Problems - Revenue/Profit/Interest: 36, 112, 117, 124, 181, 205, 210
Word Problems - Rate & Work: 5, 56, 65, 85, 87, 96, 111, 114, 179, 195, 213
DATA SUFFICIENCY
This guide contains 198 Data Sufficiency questions, including the 24 Data Sufficiency questions in the Diagnostic Exam portion of the book. The GMAC classifies question difficulty into three categories as follows:
Easy – 50 (25%, 4 more than 2016)
Medium – 51 (26%, 10 more)
Hard – 97 (49%, 14 fewer)
The Data Sufficiency section contains 26 new questions, with difficulty of Easy / Medium / Hard as follows: 9 / 12 / 15. This is in lieu of 26 questions from the 2016 edition that have been removed, with difficulty of Easy / Medium / Hard as follows: 5 / 2 / 19. The GMAC has not reclassified the difficulty of any question.
GMAT Genius classifies question difficulty into five categories. Our assessment skews significantly easier, and contains notable differences from the GMAC’s assessment. Our difficulty assessment is only 59.2% correlated with the GMAC’s assessment, demonstrating tremendous subjectivity involved in assessing question difficulty. Here’s our breakdown:
Super Easy – 7 (4%, 1 fewer than 2016)
Easy – 50 (25%, same)
Medium – 92 (46%, 1 fewer)
Hard – 41 (21%, 2 more)
Very Hard – 8 (4%, same)
Although many math questions entail multiple math concepts, GMAT Genius classifies questions based on our assessment of the primary math concept. We break down the 198 Data Sufficiency questions as follows:
Arithmetic - Basic: 13 (6.6%, 3 more than 2016)
Arithmetic - Divisibility/Factors/ Multiples: 8 (4%, 1 more)
Arithmetic - Exponents & Roots: 14 (7.1%, 1 more)
Arithmetic - Fractions & Ratios: 12 (6.1%, same)
Arithmetic - Percents: 16 (8.1%, 1 more)
Arithmetic - Pos/Neg & Odd/Even: 9 (4.5%, 3 fewer)
Arithmetic - Primes: 1 (0.5%, 1 more)
Algebra - Inequalities: 10 (5.1%, same)
Algebra - Linear Equations: 9 (4.5%, 1 more)
Algebra - Quadratics: 4 (2%, 2 fewer)
Algebra - Simultaneous Equations: 9 (4.5%, 1 fewer)
Geometry - Circles: 5 (2.5%, 2 fewer)
Geometry - Coordinate: 7 (3.5%, same)
Geometry - Rectangles: 4 (2%, same)
Geometry - Triangles: 10 (5.1%, 2 more)
Geometry - Other: 6 (3%, 1 more)
Statistics - Averages: 14 (7.1%, same)
Statistics - Other: 11 (5.6%, 1 more)
Word Problems - Functions & Sequences: 5 (2.5%, same)
Word Problems - Groups/Sets: 11 (5.6%, 1 fewer)
Word Problems - Probability: 3 (1.5%, same)
Word Problems - Revenue/Profit/Interest: 8 (4%, 3 fewer)
Word Problems - Rate & Work: 9 (4.5%, same)
Here’s a list of the 26 new Data Sufficiency questions: 231, 237, 243, 252, 254, 255, 258, 259, 262, 274, 275, 278, 283, 288, 291, 294, 304, 305, 310, 315, 316, 325, 327, 332, 347, 259
Here’s a list of the 174 Data Sufficiency questions, excluding those in the Diagnostic Exam, categorized by primary math concept:
Arithmetic - Basic: 252, 265, 269, 274, 288, 294, 315, 319, 320, 337, 363, 387, 403
Arithmetic - Divisibility/Factors/ Multiples: 275, 314, 323, 346, 389
Arithmetic - Exponents & Roots: 240, 243, 249, 273, 277, 316, 327, 338, 356, 361, 398
Arithmetic - Fractions & Ratios: 256, 268, 297, 298, 299, 312, 343, 359, 371, 386, 402, 404
Arithmetic - Percents: 239, 253, 258, 264, 276, 290, 305, 306, 308, 311, 318, 325, 353, 382, 395
Arithmetic - Pos/Neg & Odd/Even: 255, 266, 270, 293, 300, 330, 369, 399
Arithmetic - Primes: 347
Algebra - Inequalities: 246, 279, 301, 307, 324, 345, 349, 352, 401
Algebra - Linear Equations: 234, 247, 272, 278, 295, 339, 341
Algebra - Quadratics: 271, 310, 333, 357
Algebra - Simultaneous Equations: 233, 245, 292, 309, 313, 332, 344, 351
Geometry - Circles: 260, 360, 373, 376
Geometry - Coordinate: 235, 261, 317, 335, 379, 384
Geometry - Rectangles: 286, 296, 358
Geometry - Triangles: 231, 237, 262, 334, 342, 370, 380, 383, 396
Geometry - Other: 259, 289, 329, 362, 385, 400
Statistics - Averages: 281, 331, 336, 348, 354, 364, 368, 375, 378, 390, 394, 397
Statistics - Other: 242, 244, 284, 304, 322, 367, 381, 392, 393
Word Problems - Functions & Sequences: 241, 257, 355, 365, 374
Word Problems - Groups/Sets: 232, 248, 254, 280, 291, 302, 321, 372, 388
Word Problems - Probability: 236, 283, 287
Word Problems - Revenue/Profit/Interest: 250, 263, 267, 282, 303, 340, 391
Word Problems - Rate & Work: 238, 251, 285, 326, 328, 350, 366, 377
SENTENCE CORRECTION
This book contains 158 Sentence Correction questions, including the 18 Sentence Correction questions in the Diagnostic Exam portion of the book. The GMAC classifies question difficulty into three categories as follows:
Easy – 35 (22%, same as 2016)
Medium – 50 (32%, 5 more)
Hard – 73 (46%, 5 fewer)
The Sentence Correction section contains 21 new questions, with difficulty of Easy / Medium / Hard as follows: 7 / 9 / 5. This is in lieu of 21 questions from the 2016 edition that have been removed, with difficulty of Easy / Medium / Hard as follows: 7 / 4 / 10. The GMAC has not reclassified the difficulty of any question.
GMAT Genius classifies question difficulty into five categories. Our assessment skews noticeably easier, and contains notable differences from the GMAC. Our difficulty assessment is only 55.2% correlated with the GMAC’s assessment, clearly showing that there is subjectivity involved in assessing question difficulty. Here’s our breakdown:
Super Easy – 3 (2%, 2 more than 2016)
Easy – 44 (28%, 5 fewer)
Medium – 70 (44%, 6 more)
Hard – 34 (22%, 4 fewer)
Very Hard – 7 (4%, 1 more)
Although Sentence Correction questions typically entail multiple grammar concepts (as described on our website), GMAT Genius classifies questions based on our assessment of the primary tested concept. We classify the 158 Sentence Correction questions as follows:
Verb Agreement: 18 (11%, same than 2016)
Verb Tense: 22 (14%, same)
Pronoun Ambiguity: 10 (6%, 1 fewer)
Pronoun Agreement: 4 (3%, 2 more)
Parallel Construction: 52 (33%, 4 more)
Misplaced Modifiers: 17 (11%, 2 more)
Idioms: 7 (4%, 1 fewer)
Comparison & Quantity: 11 (7%, 3 fewer)
Expression & Meaning: 17 (11%, 3 fewer)
Here’s a list of the 21 new Sentence Correction questions: 668, 669, 683, 684, 685, 688, 696, 697, 703, 704, 705, 724, 725, 738, 739, 740, 747, 762, 771, 799, 803
Here’s a list of the 140 Sentence Correction questions, excluding those in the Diagnostic Exam, categorized by primary grammar concept:
Verb Agreement: 668, 675, 678, 691, 705, 709, 720, 749, 750, 760, 771, 789, 793, 794, 800, 807
Verb Tense: 676, 683, 693, 700, 706, 710, 721, 723, 731, 737, 740, 747, 751, 755, 764, 767, 774, 780, 803, 804
Pronoun Ambiguity: 670, 718, 776, 777, 779, 781
Pronoun Agreement: 685, 738, 763, 765
Parallel Construction: 669, 671, 681, 684, 686, 687, 690, 692, 696, 698, 701, 708, 712, 714, 715, 724, 726, 728, 730, 732, 734, 735, 736, 741, 742, 743, 748, 752, 754, 756, 759, 761, 762, 766, 768, 778, 782, 788, 790, 795, 799, 801, 802, 806
Misplaced Modifiers: 682, 703, 704, 707, 711, 716, 717, 722, 729, 739, 744, 746, 787, 791, 797, 798
Idioms: 672, 694, 697, 757, 786, 796
Comparison & Quantity: 677, 679, 689, 702, 758, 770, 772, 773, 775, 792, 805
Expression & Meaning: 673, 674, 680, 688, 695, 699, 713, 719, 725, 727, 733, 745, 753, 769, 783, 784, 785
CRITICAL REASONING
This book contains 141 Critical Reasoning questions, including the 17 Critical Reasoning questions in the Diagnostic Exam portion of the book. The GMAC classifies question difficulty into three categories as follows:
Easy – 41 (29%, 1 more than 2016)
Medium – 45 (32%, same)
Hard – 55 (39%, 1 fewer)
The Critical Reasoning section contains 19 new questions, with difficulty of Easy / Medium / Hard as follows: 4 / 11 / 4. This is in lieu of 19 questions from the 2016 edition that have been removed, with difficulty of Easy / Medium / Hard as follows: 3 / 11 / 5. The GMAC has not reclassified the difficulty of any question.
GMAT Genius classifies question difficulty into five categories. Our assessment skews slightly easier, but contains notable differences from the GMAC. Our difficulty assessment is 73.2% correlated with the GMAC’s assessment, clearly indicating subjectivity involved in assessing question difficulty. Here’s our breakdown:
Super Easy – 0 (0%, same as 2016)
Easy – 45 (32%, 1 more)
Medium – 50 (35%, 1 fewer)
Hard – 33 (23%, 1 fewer)
Very Hard – 13 (9%, 1 more)
We have grouped the questions based on the question type categorization that GMAT Genius uses for Critical Reasoning (as described on our website). We break down the 141 Critical Reasoning questions as follows:
Weaken: 27 (19%, 2 more than 2016)
Strengthen: 29 (21%, 3 more)
Assumption: 14 (10%, 2 fewer)
Reasoning: 5 (4%, 3 fewer)
Conclusion: 9 (6%, 2 more)
Explain: 17 (12%, 1 more)
Evaluate: 16 (11%, 2 fewer)
Boldface: 9 (6%, same)
Complete the Passage: 15 (11%, 1 fewer)
Here’s a list of the 19 new Critical Reasoning questions: 546, 549, 562, 571, 582, 587, 592, 599, 607, 610, 612, 616, 617, 618, 619, 627, 629, 661, 666
Here’s a list of the 124 Critical Reasoning questions, excluding those in the Diagnostic Exam, categorized by CR question type:
Weaken: 548, 574, 584, 589, 600, 606, 617, 618, 620, 621, 623, 627, 629, 640, 643, 644, 654, 658, 663, 666, 667
Strengthen: 545, 546, 547, 550, 560, 564, 568, 569, 571, 575, 580, 592, 594, 595, 598, 599, 602, 604, 610, 612, 626, 639, 647, 649, 656, 660, 665
Assumption: 552, 581, 585, 590, 607, 608, 616, 628, 635, 642, 650, 655, 657
Reasoning: 559, 565, 578, 597, 633
Conclusion: 544, 582, 591, 619, 645, 653, 661
Explain: 549, 551, 554, 555, 557, 566, 567, 587, 596, 614, 615, 622, 630, 648, 664
Evaluate: 553, 556, 558, 570, 572, 579, 586, 631, 632, 634, 637, 641, 662
Boldface: 563, 573, 624, 625, 636, 638, 646, 651, 659
Complete the Passage: 561, 562, 576, 577, 583, 588, 593, 601, 603, 605, 609, 611, 613, 652
READING COMPREHENSION
This book contains 156 Reading Comprehension questions across 31 passages, including the 17 Reading Comprehension questions in 3 passages in the Diagnostic Exam portion of the book. The GMAC classifies question difficulty into three categories as follows:
Easy – 51 (33%, 3 fewer than 2016)
Medium – 73 (47%, 8 more)
Hard – 32 (21%, 5 fewer)
The Reading Comprehension section contains 21 new questions in 5 passages, with difficulty of Easy / Medium / Hard as follows: 13 / 3 / 5. This is in lieu of 21 questions in 3 passages from the 2016 edition that have been removed, with difficulty of Easy / Medium / Hard as follows: 5 / 16 / 0. In this edition, the GMAC has upgraded 11 Easy questions and downgraded 10 Hard questions to Medium difficulty.
GMAT Genius classifies question difficulty into five categories. Whereas the GMAC assigns the same difficulty to all questions for a given passage (except in the Diagnostic Exam section), GMAT Genius assesses the difficulty of each question individually. Our assessment skews slightly harder, but contains notable differences from the GMAC. Our difficulty assessment is only 46.1% correlated with the GMAC’s assessment, in large part due to different difficulty assessment methodologies. Here’s our breakdown:
Super Easy – 6 (4%, 1 more than 2016)
Easy – 33 (21%, 4 more)
Medium – 67 (43%, 7 fewer)
Hard – 40 (26%, same)
Very Hard – 10 (6%, 2 more)
We have grouped the questions based on the question type categorization that GMAT Genius uses for Reading Comprehension (as described on our website). We break down the 156 Reading Comprehension questions as follows:
Primary Purpose: 24 (15%, same than 2016)
Author's Tone: 10 (6%, same)
Organization: 4 (3%, same)
Function: 18 (12%, 2 fewer)
Specific Reference: 38 (24%, 3 fewer)
Inference: 50 (32%, 2 more)
Critical Reasoning: 12 (8%, 3 more)
Here’s a list of the 21 new Reading Comprehension questions: 415 to 423, 427 to 430, 460 to 462, 529 to 533
INTEGRATED REASONING
This Official Guide includes online access to 50 Integrated Reasoning practice questions. The IR set includes 8 new questions that we have not seen before, replacing 8 questions that were in the 2016 edition. The 50 questions consist of the following four types:
Multi-Source Reasoning – 18 (3 changed)
Table Analysis – 6 (1 changed)
Graphics Interpretation – 10 (1 changed)
Two-Part Analysis – 16 (3 changed)
For the first time with IR in the Official Guides, the GMAC has assigned a difficulty rating to each question. Each type has difficulty of Easy / Medium / Hard as follows:
Multi-Source Reasoning – 6 / 6 / 6
Table Analysis – 2 / 2 / 2
Graphics Interpretation – 3 / 4 / 3
Two-Part Analysis – 5 / 6 / 5
Total – 16 / 18 / 16
For IR, GMAT Genius classifies question difficulty into the same three categories. Except for Two-Part Analysis, our assessment skews significantly easier, and contains notable differences from the GMAC. Our difficulty assessment is only 25.3% correlated with the GMAC’s assessment, clearly showing that there is subjectivity involved in assessing question difficulty. Here’s our breakdown of Easy / Medium / Hard:
Multi-Source Reasoning – 9 / 8 / 1
Table Analysis – 2 / 4 / 0
Graphics Interpretation – 3 / 5 / 2
Two-Part Analysis – 1 / 9 / 6
Total – 15 / 26 / 9
Here’s a list of the 8 new Integrated Reasoning questions: 9, 10, 11, 21, 28, 35, 41, 43
ONLINE INTERFACE
The book includes an access code (see inside back cover) that provides 12-month usage of an online version of this Official Guide. Since the GMAT is a computer-based test, we believe that it is advisable to work though the questions online. We recommend that you use Exam Mode rather than Practice Mode, since we recommend that students practice using timed question sets that replicate test day conditions.
The online practice interface has improved significantly from last year’s version. The publisher implemented most of our recommendations. In particular, note the following improvements:
1) The test interface more closely resembles GMATPrep.
2) Exam Mode is now default mode, and you cannot skip questions in Exam Mode.
3) The overview screen shows the number of questions answered and that remain unanswered, for each question type and difficulty level.
4) All questions now indicate the corresponding book number, for easier cross-referencing.
5) Integrated Reasoning is now incorporated into the main interface, rather than using a separate interface.
6) The system now has a significantly longer period before it logs-out your session.
7) All session timing is now fully accurate.
Our only significant concern with the online interface is that the system limits you to 10 saved sessions. Once you reach this limit, you must delete at least one saved session in order to keep practicing. But doing so puts all the questions from that saved session back into the unanswered question pool. As such, we recommend that you separately track which question types / difficulties you have already completed. Furthermore, we suggest completing all Easy questions in a maximum of 10 sessions, advancing to Medium questions in max 10 sessions, and finally focusing on the Hard questions in max 10 sessions towards the end of your prep.
If you have any suggestions for further improving the online interface, please let us know and we will pass your input on to the publisher of the Official Guides.
OTHER NOTES
The Official Guides are for practicing with real GMAT questions, not for learning the underlying concepts. The book contains a 40-page Math Review section that provides a very high-level overview of the math concepts tested on the GMAT. This math review will be highly inadequate except perhaps for the most advanced math students. Similarly, the brief introductions to the concepts tested on the verbal section are highly inadequate. We recommend that you use additional study materials to learn the math and verbal concepts.
Although all questions include answer explanations, many GMAT test takers are far from satisfied with these explanations. Math explanations can be brief and hard-to-understand for non-advanced students, and are sometimes convoluted or inefficient. Most GMAT test takers consider the Sentence Correction explanations quite cryptic. The Critical Reasoning and Reading Comprehension explanations, however, are reasonably good overall.
CONCLUSIONS
The Official Guide has two primary weaknesses, in our opinion:
1) An insufficient amount of difficult practice questions, particularly based on GMAT Genius’ assessment of difficulty
2) Math answer explanations that are too often either brief or convoluted and Sentence Correction explanations that are too cryptic
Despite these flaws, the Official Guide is an essential source of GMAT practice. We believe that every GMAT aspirant must use this book (or the prior edition). For these reasons, we give this book a 5-star rating. For the best value, we recommend purchasing this book as part of The Official Guide to the GMAT Review 2017 Bundle + Question Bank + Video. If you already have the 2016 edition of this book, however, the replacement of 62 math questions and 61 verbal questions is not sufficient to make this edition worth purchasing.
GMAT Genius provides extensive free GMAT preparation advice on the GMAT Genius website at GMATgenius.com/gmat-preparation/. In addition, we offer the highest-quality private GMAT tutoring to students worldwide. Please let us know if we can provide any assistance with your GMAT prep. We wish you tremendous success with the GMAT!
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