yogesh1984
I beg to defer on the bolded part- it should be at most 40 points. also variation should decrease as you move up the score ladder, as in suppose you are at 600 level then point variation could be more than if had been @ 700. Not that it's relevant here but I would mentions any way- I never got more than 640 in alll Gmat Prep tests (evben got a 580 2 days before the exam) but in real exam I scored 680 (way different no

). So in nutshell I feel how you take the whole exam mentally also factors in very well in your final score!
Dear yogesh
you were lucky that even after getting 640 you had the courage to write the exam
and you really got a 680 which is 640+40=680
- As I told earlier I would not like to give more credit to luck here. If you can believe me- it was self confidence that I can deliver better, that's all we are more interested in knowing
what exactly you feel that might be the reason of this hike
1 did your intelligence increased abruptly?
- No way! 2 did you find anyone section particularly easy than all prep materials
- Interesting Q (let me try)- Quant, yeah prob a little lower than I had expected (but then that could be becuase I had gone through some tough questions from the GmtaClub- kudos to Bunuel) Verbal- No here I got the similar level of questions 3 m sure much of the variation in scaled score must have been in verbal if yen then please en light us..
- Yeah you are right here! probably the best scaled I had in verbal was 29 but at test day I got 34- The reason I could narrow down were many: giving prep test before exam was very crucial IMO- I could realze which point I am faltering!
1- In verbal secion I would go till 20 Q's with not more than 3-4 mistakes but then I feel I used to get mentally dried up by this point and concequently become less efficient!
2- In second, third RC I used to falter more (40-50% accuracy, nothing related to my abilty of answering the question but just distraction after Q 20 in verbal part).
3- As mentioned in point 2, if you flater on RC- more likely than not you are going to get screwed up royally even the questions coming after that RC passage ( makes a good 40-50 points difference and I feel this was the difference I could make at the exam day- Though you are free to attribute this to luck factor, I would not be able to oppose
)