I have my exam in exactly 15 days from tomorrow (on August 16th 2012).
I have been practicing gmat problems for the 2 weeks and taken a good number of prep tests from GMAC prep and TPR.
Please find the details of my test results below (ordered by latest test to oldest)
Test Name Date %ile Total Q Q cor V V cor IR IR cor
Princeton Review 7 30-07-2012 79th 650 800 51 23/37 30 26/41 - 15/29
Princeton Review 6 27-07-2012 85th 680 800 51 28/37 33 24/41 - 17/30
GMAC Prep Test 1 25-07-2012 63rd 600 800 49 22/37 24 22/41 8 18/21
Princeton Review 5 24-07-2012 32nd 490 800 47 27/37 11 26/41 - 16/29
Princeton Review 4 22-07-2012 74th 640 800 47 27/37 31 23/41 - 17/28
Princeton Review 3 19-07-2012 57th 580 800 41 26/37 29 27/41 - 14/27
Princeton Review 2 17-07-2012 54th 570 800 39 28/37 29 19/41 - 21/28
Princeton Review 1 08-07-2012 48th 550 800 43 33/37 22 18/41 - 9/27
If you could observe, there is a significant improvement in the overall score (Total) in the last 3 test taken. However, the number of questions answered correctly (Q cor and V cor) are actually less in comparison to the older tests.
Also since the score fluctuates between 490 - 680, there is a high probability of getting a score less than the 600 mark in the real GMAT test; I am still not sure how the test is scored in real, but to be honest, the tests where I have scored high (600-680) and in the test where I have scored a 490 had difficult questions (may be that is the reason the over all score got boosted??? but why 490 in the 5th test??? in all the tests the incorrect answers were scattered evenly across the sections and not more than 3-4 consecutive incorrect answers).
It could also be noted that in the test where I have scored a 550 had the maximum number of correct answers but still the score was low with the test where i have scored a 600 having the least correct answers.
Since I am having just around 2 weeks of preparation time for the test, I am not able to judge myself so as to position myself of where I stand even with all these statistical data as listed above.
I can say that, most of the mistakes in quants are resultants of either misinterpreted questions (only in DS types) or "silly" mistakes which I am trying to avoid by spending more time; I almost take all the 75 minutes for quants section inspite of rushing the last 5-6 questions under 8 minutes;
When it comes to verbal, I have improved to a little extent when it comes to CR and SC types; But still RC score is determined only by luck!
I would be able give a 10 point increase in verbal but still RC does not seem to be in my hands; Even if i study the passage well and give a reasonably correct answer, it turns out to be wrong most of the times;
I am expecting a 650 + (or atleast 600 and nothing less) in the real test and would be glad if i could be given some suggestions, justifications about the unpredictable scoring as given above and expert's advice on how i can proceed further;
[The materials i am using are posted earlier - OG 13th
edition and The princeton review (TPR) selfstudy online materials and books; I would not be able to purchase or avail anyother materials due to time constraints].
Your feedback and suggestions are much appreciated.