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# GMAT PREP of GMAC Score Erroneous -Guessing there's a bug in algorithm

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Manager
Joined: 30 Jul 2013
Posts: 60
Concentration: Technology, General Management
GMAT Date: 07-03-2015
GPA: 3.8
WE: Information Technology (Computer Software)
GMAT PREP of GMAC Score Erroneous -Guessing there's a bug in algorithm  [#permalink]

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12 Aug 2018, 05:39
Dear All,

Bunnel, bb for your kind attention and analysis as well.

Urgency for analysis: I am at a critical stage of preparation with 1 month left for the exam. Each CAT is extremely important to further analyse my preparation. I took a CAT today from GMATPREP Exam 4.

Here's the snapshot of Quant result. I got a depressing 530 with Q39 and V23. I am usually at 600-620 range and this week was aiming for 650.

I may have taken about 10 GMATClub Tests and multiple CATs so far but never got only 'TWO' 700 level questions.
Number of Wrong strings - Only 2 of 3 strings
Number of Total correct vs wrong - 21/31 correct

Can you please advise on my performance and the correctness of this GMATPREP Test which supposedly the closest to the original one. Your input is VALUABLE to me!

1 PS 500 Correct 16 PS 500 Correct
2 DS 500 Correct 17 DS 600 Correct
3 PS 600 Correct 18 PS 500 Correct
4 DS 500 Correct 19 PS 500 Correct
5 PS 600 Wrong 20 DS 600 Correct
6 PS 600 Correct 21 PS 600 Wrong
7 PS 600 Correct 22 PS 700 Wrong
8 DS 500 Wrong 23 PS 500 Wrong
9 PS 500 Correct 24 PS 600 Correct
10 PS 500 Correct 25 DS 500 Correct
11 DS 500 Correct 26 PS 500 Correct
12 DS 600 Wrong 27 DS 600 Wrong
13 DS 500 Wrong 28 PS 500 Correct
14 DS 500 Wrong 29 DS 700 Correct
15 DS 600 Correct 30 PS 500 Wrong
31 PS 500 Correct

TOTAL Correct % correct
500 18 13 72%
600 11 7 64%
700 2 1 50%
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Intern
Joined: 16 Jun 2018
Posts: 38
Location: India
Schools: Stern '21
GMAT 1: 700 Q49 V41
GPA: 4
GMAT PREP of GMAC Score Erroneous -Guessing there's a bug in algorithm  [#permalink]

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12 Aug 2018, 07:01
From the analysis of my test, I am guessing that you would have attempted questions with wrong answers initially which would have led to a decrease in the level of questions the exam throwed up. (from my previous analysis) or maybe consecutive wrong attempts also does that.

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Manager
Joined: 30 Jul 2013
Posts: 60
Concentration: Technology, General Management
GMAT Date: 07-03-2015
GPA: 3.8
WE: Information Technology (Computer Software)
Re: GMAT PREP of GMAC Score Erroneous -Guessing there's a bug in algorithm  [#permalink]

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12 Aug 2018, 09:36
I took a GMATClub Quant Test just now to ensure the level of ability.

I got a score of Q47.
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Joined: 19 Jul 2018
Posts: 98
Re: GMAT PREP of GMAC Score Erroneous -Guessing there's a bug in algorithm  [#permalink]

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14 Aug 2018, 16:04
Sometimes your "floor" (the difficulty level of the easiest questions you get wrong) is just as important as your "ceiling" (the difficulty level of the hardest questions you get right), if not even more important. Based on your responses - you got a 500 question wrong early on (and then got a few 600 and then 500 questions wrong in a row) - the scoring algorithm looks like it's working as it's meant to. The black box of the GMAT scoring algorithm is really frustrating, but remember that you can get so much more from a practice test than just the score (in fact, I'd say the score is only about 10% of the use you get from a practice test.) Take some time to really analyze 1) what you got wrong that you should have gotten right 2) what you got wrong that you could have gotten right and 3) what you got wrong that you could someday get right. Then focus on 1) and 2) - you will pick up points by strengthening your floor and making sure that missing those 500-level questions isn't pulling your score down.
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Re: GMAT PREP of GMAC Score Erroneous -Guessing there's a bug in algorithm   [#permalink] 14 Aug 2018, 16:04
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# GMAT PREP of GMAC Score Erroneous -Guessing there's a bug in algorithm

Moderator: DisciplinedPrep