confusion

[divya23]

I need someone to really answer this.

When I give my MANHATTAN MOCKS i get around 22 in quant and 23-24 right question in verbal and overall score of around 660+

But when I do PRINCETON'S MOCKS i get 26 right questions in quant and 28 in verbal but my score is just 570 to 580.
I cannot understand as to why this happens.
I have to give my GMAT in next 20 days and these kinds of variations in my score really shuts me off.
I gave master gmat it said ur score is b/w 470 to 490 even after doing many questions right.
Please help in getting this thing resolved.This kinda discrepacy in score is heartbreaking.
How should i correctly gauge my performance.coz manhattan test says my performance lies between 660 to 680

SCORE & OVERVIEW OF RESULTS
TYPE SCORE ESTIMATED PERCENTILE RANK
Quantitative 46 79 % correct 21/37
Verbal 34 72 % correct 24/41
Total 660 86 %

and for princeton 26/37
verbal 25/41
overall 570
c d difference
tnk u so much

[vineeshp]

Hi Divya,

don worry too much about these numbers. The algorithm of no test prep company perfectly mocks the GMAT. How have you fared in GMAT PREP? Thats the closest to the real score you are.