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13 May 2009, 18:32
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I never took gmatprep before so I just gave it a try.
I solved up to 27th question and I realized that I had 12 minutes... I knew i will get really low score so I just filled any answer without reading questions. I also filled up verbal answers to see how I did in math. Strangely I got 47 in math and only 1 out of 10 questions I guessed was right.... I think i had 3 incorrects before 27...
Is this possible?
And how can I improve my math score? any books, tests?
I have og11,12 og math review, mgmat number property
I have kaplan 800 but didnt do it yet.
I solved up to 27th question and I realized that I had 12 minutes... I knew i will get really low score so I just filled any answer without reading questions. I also filled up verbal answers to see how I did in math. Strangely I got 47 in math and only 1 out of 10 questions I guessed was right.... I think i had 3 incorrects before 27...
Is this possible?
And how can I improve my math score? any books, tests?
I have og11,12 og math review, mgmat number property
I have kaplan 800 but didnt do it yet.
16 May 2009, 22:22
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Very strange indeed! There has been quite a bit of discussion here: gmat-scoring-algorithm-my-observations-28493.html
Number of theories exist. What were the question numbers you missed prior to the last 10?
Have you taken GMAT prep before? Are you usually a high Math scorer?
Number of theories exist. What were the question numbers you missed prior to the last 10?
Have you taken GMAT prep before? Are you usually a high Math scorer?
17 May 2009, 12:05
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Actually, your performance on GMATPrep isn't strange at all, at least acording to my GPrep experience, which is... well, lets just say I took tests 10 - 15 times... Each. 
With 3 incorrects in the first 27 questions the test has "put" you in the "51" bracket. Had you continued with such a performance you would have ended with 51 in the end of the math section. But with 12 minutes left you couldn't and, due to random guessing on the left 10 questions, you ended up with Q47. I would say it is a perfectly normal score for such a test pattern.
If you repeat that on real test, with only 3 incorrects in the first 27 questions (especially if incorrects are clustered near 20-27 group) I am 100% sure you will end up with 45+ raw score regardless of your performance in the last 10 questions.
In addition, MGMAT have conducted some analysis of the Gprep software in which they followed the results depending on the number of incorrect answers in the various segments of the test. They answered randomly on the first ten or the last ten questions with almost 100% performance on the rest of the test. When they blind guessed the last ten questions they encountered the scor drop very similar to yours.
Unfortunately, all of this just confirms the old myth that 10 to 15 questions are extremely important on the GMAT and, consequently, greater attention should be given to them.
With 3 incorrects in the first 27 questions the test has "put" you in the "51" bracket. Had you continued with such a performance you would have ended with 51 in the end of the math section. But with 12 minutes left you couldn't and, due to random guessing on the left 10 questions, you ended up with Q47. I would say it is a perfectly normal score for such a test pattern.
If you repeat that on real test, with only 3 incorrects in the first 27 questions (especially if incorrects are clustered near 20-27 group) I am 100% sure you will end up with 45+ raw score regardless of your performance in the last 10 questions.
In addition, MGMAT have conducted some analysis of the Gprep software in which they followed the results depending on the number of incorrect answers in the various segments of the test. They answered randomly on the first ten or the last ten questions with almost 100% performance on the rest of the test. When they blind guessed the last ten questions they encountered the scor drop very similar to yours.
Unfortunately, all of this just confirms the old myth that 10 to 15 questions are extremely important on the GMAT and, consequently, greater attention should be given to them.
Oh, Verbal... No my friend, verbal has totally different scoring algorithm. I am not 100% sure how it works, I assume the early questions are more important too, but its' scoring algorithm is fundamentally different than those of math section.
