Same component scores, different overall score: what gives?

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Just out of curiosity...

Can anybody explain why the same component scores yield different overall scores sometimes? Or why lower component scores even yield a higher overall score sometimes? I assume that this is because you are compared to your peers at the time of the exam, but then why don't you get a component score to match? A few examples:

I've seen a Q50, V41 get a 740. I've also seen a Q50, V40 get a 750.

I've seen lots of variations on these scores. I also saw a Q50, V41 get a 760.

I'm satisfied with my personal score and am not complaining. I just want to understand how this system works.
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by VP_Jim » Mon Feb 02, 2009 8:58 am
The percentiles change every year or so - maybe you are comparing scores from different times?

By the way, you aren't only compared to people taking the GMAT on the same day. The percentiles are set for about a year at a time.
Jim S. | GMAT Instructor | Veritas Prep