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# gmat prep software

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Intern
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gmat prep software [#permalink]

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17 Jun 2010, 07:39
I'm puzzled. I got 24 questions right out of 37 (quant section) on the GMAC prep sofware and that gave me a scaled score of 47. I've tryed one of knewton's cat and the same 24 questions right got me just 39. How can this be? Are they accurate?
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Re: gmat prep software [#permalink]

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17 Jun 2010, 08:19
Welcome to GMAT Club.
It is not really about how many questions you got right but how many hard questions you got right. There is no correlation between number of mistakes and the score since the test is adaptive. Also about a third of the questions are experimental and thus don't count/impact your score.
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Re: gmat prep software [#permalink]

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17 Jun 2010, 08:27
BB, you are absolutely right but I have one quick question. Do these experimental questions count towards level determination?

Suppose there are 13 experimental questions and in the test you have 10 incorrect answers and all are experimental questions intersperse throughout.
Can you score Q51 just because all wrong questions were experimental? Even Q50 with 10 incorrect is not bad. If these exp questions are playing such role then, isnt it a sheer matter of luck by getting only exp questions wrong.
Founder
Affiliations: AS - Gold, HH-Diamond
Joined: 04 Dec 2002
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Location: United States (WA)
GMAT 1: 750 Q49 V42
GPA: 3.5
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Re: gmat prep software [#permalink]

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17 Jun 2010, 08:35
gurpreetsingh wrote:
BB, you are absolutely right but I have one quick question. Do these experimental questions count towards level determination?

Suppose there are 13 experimental questions and in the test you have 10 incorrect answers and all are experimental questions intersperse throughout.
Can you score Q51 just because all wrong questions were experimental? Even Q50 with 10 incorrect is not bad. If these exp questions are playing such role then, isnt it a sheer matter of luck by getting only exp questions wrong.

Supposedly they don't impact your performance at all.
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Re: gmat prep software [#permalink]

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17 Jun 2010, 08:50
Yup, BB is spot on. Scores can differ based on difficulty of questions, plus there are those darned experimental questions. Our test are very accurate.

Thanks for the inquiry.
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Re: gmat prep software [#permalink]

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17 Jun 2010, 08:53
Yesterday, I retook the GMATPrep and got 50 in maths, though 1 incorrect in first 19 while 9 in next 18 (evenly spread). gurpreet, I think you judged correctly.
Re: gmat prep software   [#permalink] 17 Jun 2010, 08:53
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