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(Un) Scientific analysis of gmatprep

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Re: (Un) Scientific analysis of gmatprep  [#permalink]

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New post 27 May 2010, 22:21
My 2 cents observation with Powerprep.

I gave 2 test of powerprep.

Test 1 - Score 690, Q 49, V 34
7 Quant questions were answered incorrectly - 7, 8, 9, 11, 30, 32, 35
13 Verbal questions were answered incorrectly - 3, 9, 16, 17, 19, 20, 21, 23, 31, 33, 38, 40, 41

Test 2 - Score 690, Q 49, V 34
5 Quant questions were answered incorrectly - 5, 11, 14, 19, 36
8 Verbal questions were answered incorrectly - 1, 6, 11, 13, 19, 29, 34, 38

With less incorrect answers in test 2, I guess I should have scored higher. But then carefully observing the number of incorrect answers till question number 5, 10, 15 and 20, it seems that the score is almost finalized till ques number 20. Accuracy beyond that does not have much impact on the score.
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New post 28 May 2010, 02:12
Tarun, the scoring algorithm in PowerPrep is completely different from that of the GmatPrep. I got only one question wrong in Q but the PP gave me only 50.
Although PowerPrep is good for studying in an early phase, its questions no longer represent the current GMAT, which is then more similarly represented by the GmatPrep.

tarun wrote:
My 2 cents observation with Powerprep.

I gave 2 test of powerprep.

Test 1 - Score 690, Q 49, V 34
7 Quant questions were answered incorrectly - 7, 8, 9, 11, 30, 32, 35
13 Verbal questions were answered incorrectly - 3, 9, 16, 17, 19, 20, 21, 23, 31, 33, 38, 40, 41

Test 2 - Score 690, Q 49, V 34
5 Quant questions were answered incorrectly - 5, 11, 14, 19, 36
8 Verbal questions were answered incorrectly - 1, 6, 11, 13, 19, 29, 34, 38

With less incorrect answers in test 2, I guess I should have scored higher. But then carefully observing the number of incorrect answers till question number 5, 10, 15 and 20, it seems that the score is almost finalized till ques number 20. Accuracy beyond that does not have much impact on the score.


Posted from my mobile device
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Re: (Un) Scientific analysis of gmatprep  [#permalink]

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New post 31 May 2010, 10:55
Today, I was revising my 2 GMATPrep tests and I found the following order of CR questions (though approx 80% correct):

A P E W S I W A BF S E = 11 Questions
A=2
P=1
E=2
W=2
S=2
BF=1
I=1

C S W BF BF A W S S A F(A) = 11 Questions
C=1
S=3
W=2
BF=2
A=3

Assumption = A
Paradox = P
Evaluate = E
Weaken = W
Strenthen = S
Inference = I
Bold Face = B
Conclusion = C
Fill In the Blank(Assumption based) = F(A)

So, I think more than majority of the questions is from A, W and S. If you do well in CR, then expect rest from BF, E parts.
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New post 01 Jun 2010, 00:01
1
And also to build on top of this, the algorithm of GMATprep is not the same as the real GMAT (though very similar in terms of evaluating your abilities but not as through).

Many believe this was done to prevent reverse engineering.


MBAUncle wrote:
Tarun, the scoring algorithm in PowerPrep is completely different from that of the GmatPrep. I got only one question wrong in Q but the PP gave me only 50.
Although PowerPrep is good for studying in an early phase, its questions no longer represent the current GMAT, which is then more similarly represented by the GmatPrep.

tarun wrote:
My 2 cents observation with Powerprep.

I gave 2 test of powerprep.

Test 1 - Score 690, Q 49, V 34
7 Quant questions were answered incorrectly - 7, 8, 9, 11, 30, 32, 35
13 Verbal questions were answered incorrectly - 3, 9, 16, 17, 19, 20, 21, 23, 31, 33, 38, 40, 41

Test 2 - Score 690, Q 49, V 34
5 Quant questions were answered incorrectly - 5, 11, 14, 19, 36
8 Verbal questions were answered incorrectly - 1, 6, 11, 13, 19, 29, 34, 38

With less incorrect answers in test 2, I guess I should have scored higher. But then carefully observing the number of incorrect answers till question number 5, 10, 15 and 20, it seems that the score is almost finalized till ques number 20. Accuracy beyond that does not have much impact on the score.


Posted from my mobile device

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Re: (Un) Scientific analysis of gmatprep  [#permalink]

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New post 01 Jun 2010, 00:58
bb wrote:
And also to build on top of this, the algorithm of GMATprep is not the same as the real GMAT (though very similar in terms of evaluating your abilities but not as through).

Many believe this was done to prevent reverse engineering.


MBAUncle wrote:
Tarun, the scoring algorithm in PowerPrep is completely different from that of the GmatPrep. I got only one question wrong in Q but the PP gave me only 50.
Although PowerPrep is good for studying in an early phase, its questions no longer represent the current GMAT, which is then more similarly represented by the GmatPrep.

tarun wrote:
My 2 cents observation with Powerprep.

I gave 2 test of powerprep.

Test 1 - Score 690, Q 49, V 34
7 Quant questions were answered incorrectly - 7, 8, 9, 11, 30, 32, 35
13 Verbal questions were answered incorrectly - 3, 9, 16, 17, 19, 20, 21, 23, 31, 33, 38, 40, 41

Test 2 - Score 690, Q 49, V 34
5 Quant questions were answered incorrectly - 5, 11, 14, 19, 36
8 Verbal questions were answered incorrectly - 1, 6, 11, 13, 19, 29, 34, 38

With less incorrect answers in test 2, I guess I should have scored higher. But then carefully observing the number of incorrect answers till question number 5, 10, 15 and 20, it seems that the score is almost finalized till ques number 20. Accuracy beyond that does not have much impact on the score.


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I do agree with this. I m sure real gmat must be penalizing students who do random guesses with delay < 10sec.
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Re: (Un) Scientific analysis of gmatprep  [#permalink]

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New post 01 Jun 2010, 10:54
bb wrote:
And also to build on top of this, the algorithm of GMATprep is not the same as the real GMAT (though very similar in terms of evaluating your abilities but not as through).

Many believe this was done to prevent reverse engineering.


MBAUncle wrote:
Tarun, the scoring algorithm in PowerPrep is completely different from that of the GmatPrep. I got only one question wrong in Q but the PP gave me only 50.
Although PowerPrep is good for studying in an early phase, its questions no longer represent the current GMAT, which is then more similarly represented by the GmatPrep.

tarun wrote:
My 2 cents observation with Powerprep.

I gave 2 test of powerprep.

Test 1 - Score 690, Q 49, V 34
7 Quant questions were answered incorrectly - 7, 8, 9, 11, 30, 32, 35
13 Verbal questions were answered incorrectly - 3, 9, 16, 17, 19, 20, 21, 23, 31, 33, 38, 40, 41

Test 2 - Score 690, Q 49, V 34
5 Quant questions were answered incorrectly - 5, 11, 14, 19, 36
8 Verbal questions were answered incorrectly - 1, 6, 11, 13, 19, 29, 34, 38

With less incorrect answers in test 2, I guess I should have scored higher. But then carefully observing the number of incorrect answers till question number 5, 10, 15 and 20, it seems that the score is almost finalized till ques number 20. Accuracy beyond that does not have much impact on the score.


Posted from my mobile device


Yes, so pretty much approach the real exam the same. Limit guesses. Finish exam. Answer each question as given without trying to "figure out" the exam.
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Re: (Un) Scientific analysis of gmatprep  [#permalink]

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New post 29 Jul 2010, 07:32
1
My experience with GMATPrep Today
780 Q50 V48
On Quant missed 10 (3,5,14,18,19,23,30,32,35,37)
On Verbal missed 1

The last 10 Quant were mainly lucky guesses, when I went back and looked at them again, they seemed much easier than the first few. In fact I am currently researching the correct answer for number 3. I still haven't figured it out.
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New post 04 Aug 2010, 04:27
This thread never ceases even after 2 years.. Unbelievable stuff from bsd_lover and others.. I believe bsd_lover might not be watching this forum anymore.. But still wanna thank him for the experiment :)
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New post 04 Aug 2010, 22:28
sridhar wrote:
This thread never ceases even after 2 years.. Unbelievable stuff from bsd_lover and others.. I believe bsd_lover might not be watching this forum anymore.. But still wanna thank him for the experiment :)



Oh, he is around :)
Last visited about 10 hrs ago: members/member-33822.html
However, he does not get involved in this thread anymore now that it's been a few years...
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New post 05 Aug 2010, 20:13
[*] :cry: :cry: guys,i 've got 36 out of 41 verbal,and only20 out of 37 quants,in powerprep since,am not familiar with inequalities and quadratics as its almost 20years after my schooling,can anyone help me in telling how to tackle this situation at the earliest ?
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New post 06 Aug 2010, 00:06
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Guys one very good observation...

funda to get 51 on GMAT (atleast tested on GMATPREP) never to get two continuous questions wrong...even with 5-6 overall wrong one can get a score of 51. Same number of mistakes and at same time with only 1 continuous set wrong will lead to 50
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New post 06 Oct 2010, 23:20
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smartmundu wrote:
Guys one very good observation...

funda to get 51 on GMAT (atleast tested on GMATPREP) never to get two continuous questions wrong...even with 5-6 overall wrong one can get a score of 51. Same number of mistakes and at same time with only 1 continuous set wrong will lead to 50


No, I just did GMATPrep #2 (2nd try) and got a Q51 with numbers 28 and 29 wrong (missed 3 out of 37 total). This is the first time I've scored Q51; every other time was Q50.

So far I've found Q50 on my GMAT's every time I get 6-7 quant questions wrong, which is quite a few when you consider that 31/37 is 83.7% correct.

I've done much better on the Verbal parts, even scoring a V51 once (3rd try on GMATPrep #1). V51 resulted from scoring 100%; V48 from answering 1 verbal question (#10) wrong; V47 and V48 from answering 2 verbal questions wrong (both later on, in the 20's-40's), and V42 from answering 6 wrong.

Overall I'm not too worried about the verbal score. Although it is pretty picky, needing to get every single one right to score a 51, it's overall easier imo than the quant section, and the percentile skew is better (V46 is 99%ile). I wish they scored quant and verbal evenly; it seems that you can miss 3-4 per section and still score within the 99th percentile.
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New post 07 Oct 2010, 02:03
Remember the gmat scoring is certainly not linear. Your first experiment where you guess RC and CR and score high on SC, simply shows that your overall score is so bad that the verbal score will mirror that.

I'm not sure that answering correctly the first 10 or so questions is that important.
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New post 14 Oct 2010, 16:43
Wonderful analysis by Hussain.

gmat-prep-analysis-tool-102803.html
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New post 20 Jan 2011, 14:26
smartmundu wrote:
Guys one very good observation...

funda to get 51 on GMAT (atleast tested on GMATPREP) never to get two continuous questions wrong...even with 5-6 overall wrong one can get a score of 51. Same number of mistakes and at same time with only 1 continuous set wrong will lead to 50


I think that statement is more valid for verbal than it is for quant. During my actual GMAT prep, i got 7 wrong in verbal of which i got 2 wrong in a row 3 times (6 out of 7). I also got all questions from 13-35 correct and still scored only a 41. Then again, that may have been because i got 2 consecutive questions wrong twice before # 13.

Verbal definitely has more severe penalties for incorrect answers. I raised this question with a GMAT teacher as to why and his theory was that 'it is a lot harder for the GMAT to determine your competency in verbal than it is for the GMAT to determine your competency in quant'.
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New post 24 May 2011, 08:03
Amazing topic! Have been reading very carefully.. I'll try to test it too asa Im ready.. Great job everyone so far
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New post 03 Dec 2011, 11:27
oustone85 wrote:
mbawaters wrote:
Took the GPrep2 yesterday, I got 39 in verbal after 8 mistakes. I have seen much better scores after 8 wrong but I guess here I had 3 wrong in a row in the first 8.

My take, yes first 5-10 do have more weight!


I definitely agree. I took the GPrep1 a few nights ago and got a 44 in verbal after missing 7 questions. Only missed one out of the first 8. However, I did miss 3 out of the last 7, so that hurt some. But evidently not as much as missing them at the start hurt you.


GOod finding. Let us know if u have muchmore finding.. May be that may help us..
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New post 27 Oct 2012, 07:12
i agree with the findings of bsd_lover, but i guess we should also see how the test varies if we get a string of questions wrong!

That will be a very interesting test i believe.
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New post 12 Mar 2013, 03:38
If you are running out of time, which is worse - doing each of the remaining questions to the best of your ability, try to get them all right and leave the rest? Or do quick guesstimates and try to at least attempt all the questions? Which has more severe penalty - an incomplete test or a string of wrong answers at the end?
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New post 12 Mar 2013, 04:04
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sns wrote:
If you are running out of time, which is worse - doing each of the remaining questions to the best of your ability, try to get them all right and leave the rest? Or do quick guesstimates and try to at least attempt all the questions? Which has more severe penalty - an incomplete test or a string of wrong answers at the end?



Never leave questions. Each un-attempted question translates to (roughly) a 3 percentile drop in the score. So the penalty to leave questions unanswered is severe.

please go through this thread as well (if you haven't already) - gmat-prep-software-analysis-and-what-if-scenarios-146146.html

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Re: (Un) Scientific analysis of gmatprep   [#permalink] 12 Mar 2013, 04:04

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