How about the predictive accuracy of manhattan CAT?

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Today, I just took the free manhattan CAT....the questions seem easier than prep. So, will the score turn out higher than my level?

By the way, I also doubt the predictive accuracy of prep, since my friend who got 770 in prep test, only have 680 in the actual test.

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by little mice » Mon May 20, 2013 10:22 pm
Today I occasionally figure out the reason, and here's why:
About"the manhattan CAT" problem, it is my fault, because although you can get a relatively high score of both verbal and math, your rank will not treak you. And I guess my classmate just reviewed all the questions about "the prep"(he got the whole question pool for preparation...and I saw it.), took them repeatedly and then get a 770.

I feel a little wierd to reply myself, but I did it, because I think some guys confused about the same problem may need it.