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GMAT Club Forum Question Pool Difficulty Percentage

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GMAT Club Forum Question Pool Difficulty Percentage  [#permalink]

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New post 06 Mar 2018, 12:32
Hi

Apologies if this is a repeat query as I am sure it may be, but I have looked quickly for the answer already in the forum and could not find it.

My question relates to the % difficulty scores for GMAT questions in the online forum pool of questions.

Firstly, am I right in that these scores are likely/mainly indicative/approximate sores, correct? Or, do they tend to be actually quite accurate reflections of their difficulty and generally are taken from an official GMAC source/ inventory.

And finally, how do these % scores correlate to actual GMAT test scores <800.
I notice all 700 Plus questions are between 55%- 95%
and all 600-700 between 25%-45 %.

So would a CR question with 75% difficulty correspondent to a 750 ish level question, i.e between 700-800.

Thanks for any assistance.
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GMAT Club Forum Question Pool Difficulty Percentage  [#permalink]

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New post 07 Mar 2018, 12:38
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Hey TariqHD

The more people miss a question, the higher the % difficulty is(at least in my experience)

Attachment:
600level.PNG
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Attachment:
700 level.PNG
700 level.PNG [ 18.16 KiB | Viewed 301 times ]


"So would a CR question with 75% difficulty correspondent to a 750 ish level question, i.e between 700-800"
My answer is that it should definitely be a 700 level question.

Hope this helps you!
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Re: GMAT Club Forum Question Pool Difficulty Percentage  [#permalink]

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New post 07 Mar 2018, 12:55
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We use a histogram ranking of all questions to determine their difficulty with a few adjustments. The idea is to give you a percentile ranking of all questions and we also produce a list of the 150 hardest questions: https://gmatclub.com/forum/150-hardest- ... 04134.html

More info for you:
1. Usually few people post easy questions, so thus GMAT Club has more difficult questions than easier ones
2. We use both difficulty and time used by people to answer the question to determine the difficulty. We take both correct and incorrect time into consideration
3. Some topics such as Quant are usually better represented on GMAT Club with generally stronger quant-capable users, thus some of the quant difficulty has to be adjusted down when it compares GMAT Club vs. general population.


Thanks!
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New post 08 Mar 2018, 18:14
Thank you push and also thank you Mike for your replies; I think I get it now!
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Re: GMAT Club Forum Question Pool Difficulty Percentage &nbs [#permalink] 08 Mar 2018, 18:14
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