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(Un) Scientific analysis of gmatprep

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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 05 Jun 2008, 19:22
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Very interesting topic and experiment. Kudos for you. +1
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 05 Jun 2008, 21:34
Hey great experiment. +1.
I have another theory (ignore if this is already included in your premise). The success of first 8-10 questions roughly decides the combinations different bins (say 400 level questions, 500 level questions, 600 etc and not to mention the experimental questions). The algorithm then tests your competence against all such levels (learning as it goes along). Hence the performance across all such is required for a high score. Also, the negatives for relative easier questions will be dearer compared to missing a tough question. I will wait to see your future posts. :devil
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 05 Jun 2008, 21:44
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Interesting thoughts. I made a related observation :

The starting verbal question is somewhat dependent on the Q performance. For instance when I hit Q50, I always see the same boldface CR as the starting question. But now that my Q stats are erratic, the starting questions on V are different.

Last edited by bsd_lover on 05 Jun 2008, 23:21, edited 1 time in total.
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 05 Jun 2008, 22:07
bsd_lover wrote:
Interesting thoughts. I made a related observation :

The starting verbal questions is somewhat dependent on the Q performance. For instance when I hit Q50, I always see the same boldface CR as the starting question. But now that my Q stats are erratic, the starting questions on V are different.


Support this finding! :-D
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 05 Jun 2008, 23:13
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Bsd_lover, thanks for your experiments!!! +5

It would be great if you just continue this work and finish with a solid conclusion (especially in Verbal :wink: )
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 06 Jun 2008, 05:16
Great! Then it would mean that all questions are equally important and maybe ensure that we don't miss the easy questions and therefore accuracy should be high on easy questions! Time for me to revisit the test taking strategy. Hmmm! :wall
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 06 Jun 2008, 06:23
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bsd one request.Just get all Rc correct with an avg of sc n Cr...then what happens.is it again a s low as 13 or so?Kudos dude. :lol:
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 06 Jun 2008, 18:26
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yeah and a good experiment would be to get all rc right and the rest wrong... and then see how the verbal score shapes up... kind of like you did for SC and CR. Kudos!
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 06 Jun 2008, 19:17
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I concur...I usually have a 44-45 quant and always have the boldface as my first question.
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 06 Jun 2008, 19:47
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Boy! What would we all do without you around here, bsd_lover! Man, awesome analysis and great contributions from Suyashjhawar too. Thanks guys. It goes without saying that this masterpiece deserves a (+1)..Gotta bookmark this one! Is it worth a sticky and moving this thread upto a place where everyone can easily access this. The Mods have to determine that, I guess.
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 07 Jun 2008, 22:12
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Remember having read this in some earlier discussion. That if you finish that Quant section much ahead of time, your initial Verbal questions are extremely difficult. How true is that ??
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 07 Jun 2008, 23:27
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Based on what I've seen so far, the difficult verbals show their ugly head upfront when my quant performance is good, not when it is quick. Although I've finished quant quickly several times (e.g. when I guessed half of them), the initial verbal is always a lot easier compared with the question I see when I hit 50 on Q.
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 08 Jun 2008, 00:32
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Dependence Verbal on Quant score is very interesting....
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 08 Jun 2008, 03:13
bsd waiting for the Rc strategy....check out what happens when you get all Rc correct...
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 08 Jun 2008, 04:54
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this is just fantastic, kudos!

pls continue your second experiment on getting first 20 questions correct and remaining 17 wrong....this experiment will help us to calculate the time that we can spend on first few questions.
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 08 Jun 2008, 05:06
another data point for this one....i took a gmatprep yesterday and typically score a 44-45 on quant...but botched two simple problems due to simple calculation errors and ended up with a 43 quant. When I got my verbal section I started with a easy problem. Now when I score a 44-45 quant, I almost always start with the boldface question...very interesting indeed.
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 08 Jun 2008, 06:16
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Don't read too much into getting a BF in GmatPrep. BF are no more difficult than other CR questions. I am sure that GMAC does not choose the first verbal question on the basis of the quant score.
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 08 Jun 2008, 06:42
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5. What is the importance of the 1st 5 questions?
Experiment : If I mess up the first five and kick butt in the remaining can I reach my normal potential (as the OG claims)
Methodology : Ensure I get the first five wrong and focus on the remaining 32
Results : Q49 with 7 wrong overall.
Analysis: I, for some reason, thought that the 1st 5 are pretty crucial to the GMAT score. Boy was I wrong. I made sure that I got all first five incorrect (I actually solved them and then picked the wrong one just to be sure). Then I really focused on the last 32. Got a couple of them wrong but over all 30 correct. Final score = 49. Of course I am sure it would be a 50 if I had some more success in the 1st 5, however, this shows that even if you totally stuff up the 1st five, you can still pick it up and reach 49 Q, a most acceptable quant score.

6. Improving RC will greatly improve my final score.
Experiment : how important RC really ?
Methodology: I decide to guess all CRs and SCs and only focus on RCs.
Results - Final V score 6 :oops: . Although I got 10/11 RCs correct. Total 28 wrong.
Analysis: This was again, totally unexpected. I genuinely thought that RCs mattered, at least as much, if not more, than CRs and SC. This experiment showed that if anything, RC mattered LESS :shock: When I did the guess work for CRs and SCs at least I was getting a V score in the 10s. I certainly wont take this result as an indication that I can slack off on RCs just yet ..
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 08 Jun 2008, 07:44
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One of the problems with figuring out the algorithm with your methodology is that the order of the questions changes. Imagine if you got 5 sentence corrections in a row and you missed all of them it is going to appear like Scs are more important. The scoring doesn't differentiate the question type only the level of the question.
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Re: (Un) Scientific analysis of gmatprep [#permalink] New post 08 Jun 2008, 08:39
I agree with lsguy..."The scoring doesn't differentiate the question type only the level of the question." after your analysis and others i feel,the best way is dont think much about it and go with the aim of doing well bcos even after getting first few correct you got 47 plus and even you get first five wrong,then also 47 plus.But was surprised with the Rc results.

Moral of the Story:Dont worry much whether boldface or first five or last five etc! :wink:
Re: (Un) Scientific analysis of gmatprep   [#permalink] 08 Jun 2008, 08:39
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