Qualification > Math

O level Stats 4040

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syntacus:
Yar i think most of those people are wrong! It makes no sense to leave the s.d at 0.49!!!! You had to multiply by 1000 as the question said that using your answers in part (i) calculate the s.d and mean in kilometers /hour and not thousands of kilometers/hours as given in the question in the previous part! In the first part most of the people gave the mean as . something... but I think the mean was 299. something!
If someone would remember the exact question that was asked.. anyway that is what I remember and I think what I did was correct :|.Not possible that the mean in part (i) was . something and in part (ii) You just added 299 to it... it makes no sense whatsoever..

DrEvil:
u are absolutely right dear but i think this is not smthing that we have to decide on ourselves, lets wait fr the rezults now...i hope that our answer will be right... ;) ;) ;)

syntacus:
hmm yeah I guess you are right.
I feel a bit more confident now though because I now know that I wasn't the only one who did the question like this hehe!
Yar really, the paper this time around was very different from before.. I think the percentile will definitely drop and I think one can secure an A at at least 170+
What do you think?
By the way, where from Lahore are you drevil and what school do you go to if you don't mind me asking?

DrEvil:
i think that A will be around 160-165...  :-\ :-\ :-\ :-\ :-\

syntacus:
Hmm yeah usually the percentile fixes at about 92.5% .
This time definitely the paper was more difficult than the previous times, so I'm pretty sure the A percentile will be around that mark 82 - 85 % .
Lets hope for the best!!!!

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