Guess my score?

[millencolin600]

My assestment summary:

PS: 13 Right 9 Wrong avg diff right = 670 avg diff wrong = 690
DS: 9 Right 6 Wrong avg diff right = 660 avg diff wrong = 680

SC: 9 Right 6 Wrong avg diff right = 670 avg diff wrong = 700
CR: 7 Right 7 Wrong avg diff right = 610 avg diff wrong = 650
RC: 5 Right 7 Wrong avg diff right = 670 avg diff wrong = 670

With this data what final score fits better? 600? 640? 680?

[millencolin600]

Well... My score was 620.

Just looking at the summary I would say something between 650-670.

If my correct answer choice average has been 660 how is it possible to have an score of 620?

[StaceyKoprince]

The score is not based on percentage correct nor is it based on average difficulty level. The test is scored in a way that is wildly different from anything you've experienced in the past - the data you posted is almost irrelevant to the actual score! (Not entirely, of course - but that data is not how you will arrive at even an approximation of your score.)

If you'd like to learn more about the scoring (and I recommend doing that!), read the Scoring section of our free e-book, The GMAT Uncovered Guide.

Also read this; it doesn't get into details about the scoring, but it does tell you how you have to approach this test VERY differently from any other tests you've taken in the past:
http://www.manhattangmat.com/blog/index ... to-win-it/