Question about MGMAT CAT adaptaion model

by **Captain** Sat Apr 19, 2008 9:38 am

Hi,
My question is about the adaptation of CAT. I sat for a test a few minutes ago. While reviewing the results I observed that
1) In the first 15 questions I got a mix of 9 700-800 level questions. 5 600-700 level questions and 1 500-600 level question. Out of these I incorrectly answered 4 of the 700-800 level questions. The rest 11 questions were correct.
2) Qestions 16 - 37 were all 600-700 questions. And I was wrong in only question 23.

I am unable to understant why I did not get any 700-800 questions after Q 15. Is it because in the first 10 question I made 4 mistakes and the computer decided to give me only easier ones. Will actual GMAT also give so much weightage to the first 10 questions?

I got the same scaled quant score in 2 of these tests. In the first test I had tougher questions and I made 11 mistakes. In this test I made 5 mistakes.

by **StaceyKoprince** Mon Apr 21, 2008 6:55 pm

To make sure I understand correctly - after question 15 you got only one question wrong? How many practice tests have you taken? The algorithm is required to give you new questions only for your first 6 tests. If you've been scoring very highly (mostly in the 700-800 level) right from the beginnin in quant and you are towards the end of your 6 tests, you may have begun to exhaust the pool of 700+ questions.

Either that, or some software bug hit when you took your test. If the above doesn't apply, send an email to techsupport@manhattangmat.com to outline what you described and ask them to have someone take a look.

The algorithm does NOT decide to give you only easier questions due to early mistakes. The test definitely doesn't work that way - neither our test nor the official test.

by **Captain** Tue Apr 22, 2008 3:57 am

Yes after question 15 I had only 1 mistake.
I got only one question wrong. last test was the 4th test I took, 1 free + 3 CAT.

My scales scores in quant have been 45, 49, 51, 51.
I am sending a mail to tech support. Before this test I took only half of the available tests, so maybe there was a bug in the system. But it helps to know that the first 10 questions are not as important as some people want me to believe.

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by **rfernandez** Thu Apr 24, 2008 2:44 pm

Let us know what you find out. Thanks.

Rey

by **Captain** Fri Apr 25, 2008 3:42 am

It seems that the pool of 700-800 questions are depleted.

by **rfernandez** Fri May 02, 2008 3:03 pm

Thanks.