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Question about the GMAT scoring algorithm

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Joined: 15 Dec 2009
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Question about the GMAT scoring algorithm [#permalink] New post 09 Jan 2010, 17:46
Let's start another round of speculation here, unless someone knows the definitive answer....

Let's assume this: Difficult Question with the following answer choices

a) rubbish
b) Gmat trick
c) rubish
d) fancy Gmat trick
e) correct answer

Do you guys suppose that the scoring algorithm might harm you more for picking answer a) over answer d). I could see this being the case, it in my opinion, would partially contribute to why people could score an 800 with multiple wrong answer. The wrong answer these people had were not 'straight out' wrong, but maybe in a complex math problem one forgot the final step, but was on the right track, thus the algorithm gives you 'partial credit'.
What do you think guys?

Sample Question I have in mind is this:

A dog trainer has 13 dogs, 8 of which are German shepherds. If he trains 5 dogs in a training session and at least 4 are German shepherds, then how many different combinations of dogs might he train at any given session ?

a) 10
b)231
c)336
d)350 (8C4*5C1)
e)406 (8C4*5C1)+8C5


OA is E, however answer D is representative of the right thought process, but the reader fails to take 'at least' into consideration. Thus I am wondering whether there may be something like partial credit. This question is adapted out of the most recent book of a company that just bought another company if you know what I mean ;-)
Any thoughts?
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Re: Question about the GMAT scoring algorithm [#permalink] New post 09 Jan 2010, 19:23
ThomasD wrote:
Let's start another round of speculation here, unless someone knows the definitive answer....

Let's assume this: Difficult Question with the following answer choices

a) rubbish
b) Gmat trick
c) rubish
d) fancy Gmat trick
e) correct answer

Do you guys suppose that the scoring algorithm might harm you more for picking answer a) over answer d). I could see this being the case, it in my opinion, would partially contribute to why people could score an 800 with multiple wrong answer. The wrong answer these people had were not 'straight out' wrong, but maybe in a complex math problem one forgot the final step, but was on the right track, thus the algorithm gives you 'partial credit'.
What do you think guys?

Sample Question I have in mind is this:

A dog trainer has 13 dogs, 8 of which are German shepherds. If he trains 5 dogs in a training session and at least 4 are German shepherds, then how many different combinations of dogs might he train at any given session ?

a) 10
b)231
c)336
d)350 (8C4*5C1)
e)406 (8C4*5C1)+8C5


OA is E, however answer D is representative of the right thought process, but the reader fails to take 'at least' into consideration. Thus I am wondering whether there may be something like partial credit. This question is adapted out of the most recent book of a company that just bought another company if you know what I mean ;-)
Any thoughts?


I think it depends how many questions at the same level you received before that. For example, you missed to 700-800 level questions before that then regardless of what you answer you would probably get an easier questions. However, if you got two 700-800 questions right you will probably get another 700-800 even though you got it wrong. Who knows?
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Re: Question about the GMAT scoring algorithm [#permalink] New post 09 Jan 2010, 21:36
Expert's post
There is a lot of discussion about Algorithm behind the GMAT, but the truth is, nobody knows for sure.

here is one of the more interesting ones: gmat-scoring-algorithm-my-observations-28493.html
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Re: Question about the GMAT scoring algorithm   [#permalink] 09 Jan 2010, 21:36
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