Great stuff! Just want to correct one piece of information:
The people from Manhattan often mention that most people score about 15 pts less than their highest Manhattan CAT score on the real GMAT.
This isn't actually accurate. (And if you did indeed hear that from someone from my company, let me know, so I can set him/her straight.)
The average score "skew" across all students from final (NOT highest) practice test to official test is consistently less than 5 points. Sometimes it's +2 or 3, sometimes it's -2 or 3, but we actively manage our test to ensure that we don't end up with a consistent bias that skews significantly high
or low.
The standard deviation is about 50 points from final test to official test, so most people score with plus-or-minus 50 points, but the overall skew, or bias, across all testers is as close to zero as we can get it.
Last edited by
Stacey Koprince on Mon Jan 25, 2010 11:40 am, edited 1 time in total.
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Stacey Koprince
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Manhattan GMAT
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