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Vaidya
Joined: 02 Oct 2016
Last visit: 10 Sep 2025
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Location: India
Schools: HEC Dec '17 (D) IE (A) INSEAD Jan'23 intake
GMAT 1: 740 Q49 V42
09 Jan 2017, 02:31
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Hi guys,
I know they say GMATPrep uses the same scoring algorithm used in the actual exam, but I don't understand how the two can be compared since the actual exam can have up to 9 experimental questions in each section.
I can't seem to find any discussion which takes into account this issue. Could someone shed some light on this, please?
P.S. Just want to clarify that I'm not going to attempt to identify WHICH questions are experimental. Purely out of curiosity.
Thanks
Vaidya
I know they say GMATPrep uses the same scoring algorithm used in the actual exam, but I don't understand how the two can be compared since the actual exam can have up to 9 experimental questions in each section.
I can't seem to find any discussion which takes into account this issue. Could someone shed some light on this, please?
P.S. Just want to clarify that I'm not going to attempt to identify WHICH questions are experimental. Purely out of curiosity.
Thanks
Vaidya
mvictor
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Joined: 17 Jul 2014
Last visit: 14 Jul 2021
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Location: United States (IL)
Concentration: Finance, Economics
Schools: Stanford '20 (WD)
GMAT 1: 650 Q49 V30
GPA: 3.92
WE:General Management (Transportation)
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09 Jan 2017, 11:14
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You can never know which one are experimental...if you are good at both Quant and Verbal, and you are doing really well throughout the exam, you can easily spot the experimental ones, as they are either extremely easy or extremely hard.
GMATPrep basically doesn't count some questions when calculating the raw scores, to simulate the real test.
GMATPrep basically doesn't count some questions when calculating the raw scores, to simulate the real test.
09 Jan 2017, 12:39
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GMAT Prep actually uses a different algorithm/methodology from the actual test. The two grade the tests in a similar way/fashion but they are different. There is a number of reasons for this (which I don't even know all of them) but the main ones are:
- Experimental questions - GMAT Prep does not have them
- Anti-cheating protections that official test has such as someone answering questions corrently within seconds or unusual patterns
- Official algorithm is pretty closely guarded so GMAC did not want to put it out there for someone to reverse engineer it
- GMAT prep and its algorithm have not been updated in a number of years (like 5 i think) while I am guessing GMAC keeps the official test much more current in terms of scoring methodology
P.S. you will never know which questions are experimental, so don't worry about that part. Just try to do your best on each question without spending too much time on any of them.
- Experimental questions - GMAT Prep does not have them
- Anti-cheating protections that official test has such as someone answering questions corrently within seconds or unusual patterns
- Official algorithm is pretty closely guarded so GMAC did not want to put it out there for someone to reverse engineer it
- GMAT prep and its algorithm have not been updated in a number of years (like 5 i think) while I am guessing GMAC keeps the official test much more current in terms of scoring methodology
P.S. you will never know which questions are experimental, so don't worry about that part. Just try to do your best on each question without spending too much time on any of them.
