Hi bitanrc,
First off, a 630/Q49 is a good score (it's right around the 75th percentile overall), so it could be enough to get you into your first-choice School. As such, a retest might not be necessary.
GMAC has publicly stated that the Official Score that you earn on Test Day is within +/- 30 points of actual ability. Assuming a similar 'swing' in how your CATs function, your score results all revolve around a 650 (with your Official GMAT Score at the lower end of the range).
Since you scored
...
First off, a 630/Q49 is a good score (it's right around the 75th percentile overall), so it could be enough to get you into your first-choice School. As such, a retest might not be necessary.
GMAC has publicly stated that the Official Score that you earn on Test Day is within +/- 30 points of actual ability. Assuming a similar 'swing' in how your CATs function, your score results all revolve around a 650 (with your Official GMAT Score at the lower end of the range).
Since you scored
...
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