Error Log for GMAT Official Guide 2021

Question

Error Log for The GMAT Official Guide 2021 Ed Error Log & Difficulty https://gmatclub.com/blog/wp-content/uploads/2020/11/OG-21-cover.png The Official Guide 2021 is a great resource - it has real GMAT questions, all questions are arranged in order of difficulty, good explanations, etc but it has one major flaw - no way to sample specific questions or ability to target a specific area - for example all SC questions with idioms or all DS questions that deal with geometry. This Guide attempts to correct that flaw (and a little bit more), making the Official Guide even better. Google Spreadsheets Version is here: - Official Guide 2021 error Log - Quant OG 2021 Error Log - Verbal OG 2021 Error Log You can download the Excel version from Google Sheets If you are planning on using the online version, just make a copy. Don't be a dumbo and request edit rights. I won't give them to you

Excel Versions: I have gotten 20+ requests from people to share access to the files (which means people are not reading the instructions so I am posting a downloadable excel version as well) Error Log for the Official Guide OG 2021 (2).xlsx Copy of GMAT Club Guide to OG Verbal Review 2021 V1.xlsx ERROR LOG for the Official GMAT Quantitative Review 2021 Edition_ (2).xlsx Use this guide to: Find Difficulty about every question available in the - Official Guide for GMAT Review Help find specific practice questions and build your custom practice tests that focus on your weak areas Keep your OG Practice in one place with an Error Log and Analytics Understand difficulty of each question (it is not very linear as you will notice). We have split difficulty into 4 groups (easy, medium, hard, and very hard). This split is based on the percentile of the question difficulty as determined by GMAT Club Timer sessions Explanations are linked to each question for easy reference Updated the Error Log numbering The split of hard/medium/easy questions has somewhat changed and in part that's true for new questions that have been added as well as existing questions being "harder" due to members making more mistakes - so the changes are happening on both ends of the equation if that makes sense. Stats & Question Details: https://gmatclub.com/blog/wp-content/uploads/2020/11/og-2021.png Example of the Error Log https://gmatclub.com/blog/wp-content/uploads/2020/11/error-log.png Previous Versions: Official Guide 2020 ed Error Log Official Guide 2019 ed Error Log Official Guide 2018 ed Error Log Official Guide 2017 ed Error Log Official Guide 2016 ed Error Log You can find previous OG 12, 13, 14, and 15 versions here , MGMAT Navigator Basic is another/similar tool available from MGMAT PS. If you find any issues with the Error Log, please PM me. Also sorry for a super late release of the file. It's been a crazy year with some awesome events like MBA Spotlight but it has kept me away from my usual activities.

bb · Answer

Quick note, a few folks mentioned that the DS Error log was misbehaving. There was an error in the formula. It has been fixed and updated. Thank you

bb · Answer

I have just completed the Error Log for the Quant Official Guide 2021

!	Google Sheets Version: https://docs.google.com/spreadsheets/d/ ... sp=sharing Please use File >> Make a Copy to get a personal copy

WarriorWithin · Answer

Hi  bb

I have just downloaded the error log copy in my laptop. Thank you so much.

I was specifically looking for - more analytics in SC and CR error log - for example 
in CR - we have Assumption, Strengthen, Weaken -- So I wanted individual level accuracy for each one of the metrices.

Can you suggest how should I monitor accuracy of each type of questions in CR and SC.

I found one of the error log uploaded on the forum similar to the one I am expecting - please see the snapshot -

bb · Answer

It is fully up to you but keep in mind the purpose of the error log is not to have it as a statistical tool that you will open after years and chart the course. The purpose is to get better and eliminate mistakes so I would suggest to you to aim to make zero mistakes, and not even needing the analytics. I am also suggesting that you spend more time following up on your mistakes and chasing the weak areas and improving rather than taking 1 hour to solve 30 questions, then 5 minutes to review, and then back to another hour of question solving. That is useless. You should first cover a chapter of the relevant material, then do 10 questions in 20 mins and see if you can get 18 right. If you miss more, then go back and figure out why.

P.S. I don't see a point in taking 10 different question types in one day (unless you are taking the test in a few weeks and you finished covering all material... in which case you should be taking a CAT instead).

flymango · Answer

Link to the OG Quant Error Log is broken, can't access file :/  bb

bb · Answer

I have added the Excel versions for all the people who don't read the instructions

PS. I checked permissions and it seems the file opens. Keep in mind, you will only be able to view it. You won't be able to do anything with the online version until you save a copy or download a copy. You cannot modify the master version....

bb · Answer

A quick note that the Verbal OG 2021 Error Log has been uploaded.
Link and file are in the first post.

Thx.

plaverbach · Answer

Isn’t the GMAT Club error log better for this? The excel file can be used in the way you are describing

Posted from my mobile device

mjc35 · Answer

Quant PS is very broken from ~Q50 onwards. DS seems all good. Cheers  bb

bb · Answer

Thank you. I have fixed the formula that was affecting the Quant OG PS Section. It is now updated in both online and the Excel versions.
Thanks so much!
BB.

raekay18 · Answer

Do you have an error log for the advanced 2021 book?

bb · Answer

I do not believe so. We have not put one together since it came out last year. No one has actually asked. If you would like to work on it together, let me know.

Thx 
BB

Posted from my mobile device

RiseHigher · Answer

The error log on google drive is not correct - the exercise numbers (e.g. 108, 109 in PS) do not refer to the correct GMAT question IDs!
Is it the wrong version?

Posted from my mobile device

mba757 · Answer

Hi all,

Has anyone made an error log for the Official Guide 2022?

bb · Answer

The 2021 and 2022 books are the same. Exactly the same with exception of 3 questions…. I guess we can make it… would be really easy.

Posted from my mobile device

carcass · Answer

I did not spot these 3 questions. Perhaps, I have missed something or overlooked it, Sir.

ProKiller · Answer

A small correction...

CR Q #672 ( CR03940 ) is a weaken question.

Also, the right OA is B.

Request to please update. Thanks.

P.S.: The strengthen version of this question is here: https://gmatclub.com/forum/editorial-th ... 48863.html

GMAC

OklahomaSooners · Answer

So, question.

These problems are tagged by difficulty based on how the community answered, correct?

Some of these problems are listed as Easy on the error log but are listed as medium or hard in the actual OG and I'm just wondering if you guys have come up with some method to determine which questions are 600-700 level questions or if I should just use the OG categorization to determine if it's a medium or hard question.

Thanks.

sting8 · Answer

Thanks for the error log, it is very useful in tracking progress.

One query, how to use the "Completed Time" column?
Is there any particular format to be used ?

Whenever i am trying to put 01:16 meaning 76 seconds, it is being shown as 16:00
Similarly, if I try to put 00:20 meaning 20 seconds, it is being shown as 20:00

Am I missing something ?

bb   carcass

	Magoosh increases your score, guaranteed - 15% off ALL Magoosh GMAT plans with code GMATCLUB15 + Free GMAT Club Tests.
	Manhattan Prep: $79 Bonus Score Higher on Your GMAT Exam. Guaranteed.
	Target Test Prep - Save up to $325 $200 Discount + $79 Bonus GMAT Club Tests
	e-GMAT: 60% Off on GMAT Focus Get to 735+ from any starting point
	Experts' Global - ~~$1720~~ $960 End-to-End GMAT Prep + App Support: 150+ Videos, 2000+ Questions, 15 FLTs +
	GMATWhiz - $299 ~~$499~~ Experience the course through a free trial.
	GMAT Club Tests - Free Included with every course purchase of $149+ View all deals

Error Log for GMAT Official Guide 2021

Prep Toolkit

Top 5 GMAT Debrief Videos

615 to 715 in 15 Days (Ria's Strategies)

More than Quant/Verbal Abilities: Speed vs. Accuracy

745 with Only Self-Prep and GMAT Club

From 555 to 765: 210-point Improvement

Perfect 805 Score Debrief by Julia

My Rewards