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(Un) Scientific analysis of gmatprep

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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 13 May 2010, 08:25
excellent work!! keep on posting updates

In verbal we have sc, rc and cr.
However, in math we have different topics.
But what if you get wrong a geometry question, sometimes, I think that later appears another geometry question.
What do you think?
Don't you think that sometimes there are some basic topics that are always cover and if you get one of this topics wrong, another question of this topic is going to appear in the exam.

anyway, great work and very interesting results!!
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 16 May 2010, 15:24
This is awesome! Keep it up!!!
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 23 May 2010, 01:45
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great post buddy.

I'm wondering. I kaplan free practice test, I got 4 incorrect in quant. it showed 45 scaled score. I was expecting atleast 49 here, but my first question was wrong. Does 1st incorrect answer scale down your score 4 points? or is just kaplan's strategy to enroll me for the course?
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 23 May 2010, 09:26
Just got a 50q on the GMAT Prep. I took it without trying to find patterns. Also, I only ran into 2 questions I had seen previously. One I got wrong and one right, but not on purpose. I took the questions as I got them. Here is some info. in case it helps.

2 out of the 1st 10 wrong: #3 and #8
Then got on a hot streak until I reached #20, which I missed
I also missed #22
Then I missed #28, 29, 31

Total 7 Incorrect:
More importantly 2 out of the 1st 10 were incorrect. Still got a 50 so don't know if that proves it's a matter of streaks more than anything else (or not missing too many consecutively)

1st two verbal questions were very easy. I then skipped the rest of the questions.
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 23 May 2010, 15:07
7 incorrect still 50, that's great. :-D

Best we could do is to take one extra minute just after the question we are sure of being incorrect or randomly guessed.
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 23 May 2010, 17:32
Wow guys, this is awesome. Now I won't stress quite as much when I'm panicking over an early quant question.. wait no, I still will :[
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 23 May 2010, 23:09
brianfried wrote:
Wow guys, this is awesome. Now I won't stress quite as much when I'm panicking over an early quant question.. wait no, I still will :[



But I would still suggest you to kill the initial questions with extra caution and make sure you don't miss consecutive questions. It should be intersperse throughout.
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 25 May 2010, 03:07
I took 2 GPREPs in the last 3 days.

GPREP 1 - Q43 - Overall 20 Wrongs. 7 Wrongs in the 1st 20. Last 10 (28 - 37) - All wrong. Ran out of time, had to guess them.

GPREP 2 - Q42 - Overall 13 Wrongs. 8 Wrongs in the 1st 20. Only 3 Wrongs in the last 10. None consecutive wrong in last 10.

I had a good feeling about Quant this time. I was expecting 46 - 47. Bump, it was 42 and 1 less than previous attempt despite fewer Incorrects.

This goes to say that 1st 10 or maybe 1st 20 matters, cuz the software fairly fixes your range by this time and your performance in the last 10 or 7 doesnt really help or hurt much.

One more observation in both Quant attempts, I got 2 consecutive wrongs 3 times in the 1st 20. Maybe consecutive wrongs further helped to downgrade my Quant level - range.

GPREP 1 - V38 - Overall 14 Wrongs. Got all RC right. SCs - 8 Wrong. CRs - 6 Wrong. I spent lot of time on RCs, hence ran out of time towards the end and had to guess like 10 Questions.

GPREP 2 - V35 - Overall - 12 Wrongs. RC - 4 Wrongs. SCs - 6 Wrong. CRs - 2 Wrong.
I wanted to replicate the same here. Get all RCs right by spending more time so that I can assure myself of V36 atleast. But 1 RC came after 33 and had to guess those 3 or 4 of those RC Qs and ended up with 2wrong out of it. I think if I had replicated the same here, like all RCs right, I would have hit V38.

What do you guys think of this Verbal strategy? I know not the best of strategy, but if RC was my strength, why not put that wee bit extra time to minimize the RC errors like only 1 or 2 RC errors.
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 27 May 2010, 10:27
GMATPREP1 I have taken last Sunday (without the AWA):

Q50- 6 errors: 2 in the first 15Q's, 1 between 16-30 and 3 between 31-37. (3PS, 3DS)
V42: - 5 errors: evenly distributed: 3SC, 1RC, 1CR.

As a rule of thumb, when you are hitting the top scores in Quant, around (+-2) 12 wrong questions give 49, 6 wrongs questions give 50 and 3 wrong questions 51.
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 27 May 2010, 21:21
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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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 28 May 2010, 01:12
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.


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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 31 May 2010, 09:55
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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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 31 May 2010, 23:01
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Expert's post
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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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 31 May 2010, 23:58
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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670-to-710-a-long-journey-without-destination-still-happy-141642.html

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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 01 Jun 2010, 09:54
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 Image


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] New post 29 Jul 2010, 06:32
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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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 29 Jul 2010, 18:05
jallenmorris wrote:
bsd_lover

This is an awesome experiement! You should get some major kudos for this.


yes! keep it up!
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 04 Aug 2010, 03:27
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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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 04 Aug 2010, 21:28
Expert's post
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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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 05 Aug 2010, 19:13
[*] :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 ?
Re: (Un) Scientific analysis of gmatprep   [#permalink] 05 Aug 2010, 19:13
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