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Number of Questions Wrong to get a 51 in Quant

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Number of Questions Wrong to get a 51 in Quant [#permalink]

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New post 07 Aug 2017, 11:07
I just receive the enhanced score report and it seems like I got 2 questions wrong and a score of 50 on quant.
For those of you who got a 51 on quant, how many questions did you get wrong?

I understand that GMAT is a CAT and that it's hard to translate # of incorrect questions to a score, but I am just curious whether you have to answer ALL of the questions correctly in order to get a 51.

Thanks!
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Re: Number of Questions Wrong to get a 51 in Quant [#permalink]

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New post 07 Aug 2017, 19:32
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cchang1221 wrote:
I just receive the enhanced score report and it seems like I got 2 questions wrong and a score of 50 on quant.
For those of you who got a 51 on quant, how many questions did you get wrong?

I understand that GMAT is a CAT and that it's hard to translate # of incorrect questions to a score, but I am just curious whether you have to answer ALL of the questions correctly in order to get a 51.

Thanks!


Hi,

First of all congrats on getting Q50. There is very very thin line between Q50 and Q51. How much did you score in your verbal?

As you said, it is very hard to convert the # of incorrect into a score. There are people who got more than 2 incorrect and got 51. GMAT does have some experimental questions. As the name suggests they are not included in the score. So if you get all the experimental questions incorrect but all the questions that account for the score as correct you may get Q51.

But the trick is we don't know what questions are experimental. There is some research done in gmatclub to find out how many experimental questions one may get. But we cannot clearly say which question is experimental.

Hope it helps.
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Re: Number of Questions Wrong to get a 51 in Quant [#permalink]

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New post 07 Aug 2017, 20:42
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There are 9 experimental questions, and 28 questions that count in Quant. Q50 and Q51 level test takers will answer all or almost all of their experimental questions correctly, because experimental questions will span all difficulty levels (so will mostly be easy to a test taker at the Q50 level), while the questions that count for the Q50-Q51 test taker will mostly be high-level problems, and might be challenging even for a top level test taker.

As you correctly point out, it's hard to translate # of incorrect answers to a score on an adaptive test. This is a complicated subject to discuss in brief, but question difficulty isn't perfectly predictable, and will vary from test to test. Some GMATs are full of very hard questions when you perform well, and then you'll have more latitude to make mistakes; you'll be able to get a Q51 with more wrong answers. Some GMATs have fewer hard questions even when you do well, and then you'll need fewer errors to get a Q51 (but it will be easier to answer each question correctly). Whether your test is easy or hard shouldn't affect your score, but it will affect the number of wrong answers you can afford to have to score a Q51. Dabral, who is a reputable GMAT expert, did some studies with GMATPrep, and found that it's sometimes possible to get a Q51 with as many as 6 incorrect answers. But the free GMATPrep tests have a very large supply of hard questions to draw from, and you sometimes might not see quite as many hard questions on a real test, depending on a few factors. It sounds like that was true on your test, since two wrong answers most of the time will produce a Q51 score.

It's also true that not every Q50 is the same, because of rounding. With only two wrong answers, I'd bet your Q50 is really more like a Q50.4, and it's the unrounded score that is used to produce your score out of 800. If you google your Q/V score combination, and find that other test takers with the same Q/V split sometimes have a total score that is 10 points lower than yours, it's likely your Q score was just a small fraction of a point away from Q51.

Normally I wouldn't agree with the post above, that says there's a thin line between Q50 and Q51; since you often need to be almost perfect to get a Q51, but can afford a comparatively large number of mistakes to get a Q50, I'd normally describe the improvement from Q50 to Q51 as the biggest one-point jump you can make on the GMAT in either section. But in your case, it sounds like you're either very close to the Q51 level or are already there, so it seems to be true in your situation. A Q50 is a great score regardless, and raising it to a Q51 isn't likely to make any difference if you're applying to MBA programs.
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Re: Number of Questions Wrong to get a 51 in Quant [#permalink]

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New post 09 Aug 2017, 07:31
cchang1221 wrote:
I just receive the enhanced score report and it seems like I got 2 questions wrong and a score of 50 on quant.
For those of you who got a 51 on quant, how many questions did you get wrong?

I understand that GMAT is a CAT and that it's hard to translate # of incorrect questions to a score, but I am just curious whether you have to answer ALL of the questions correctly in order to get a 51.

Thanks!


You should get Q51, but probably the one question that you got wrong was not of HIGH DIFFICULTY level. With 1-2 questions wrong it is generally a Q-51 and with 2-4 it is a Q50. Here is some data collected from ESRs uploaded at - https://gmatclub.com/forum/information-on-new-gmat-esr-report-beta-221111.html
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Q51 Vs Q50.png
Q51 Vs Q50.png [ 32.26 KiB | Viewed 2699 times ]


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Re: Number of Questions Wrong to get a 51 in Quant   [#permalink] 09 Aug 2017, 07:31
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Number of Questions Wrong to get a 51 in Quant

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