Stats Paper Discussion

[vishal kumar]

yar i also used 99 for the interquartile range and got 32....

yar what were the marks for this part?? and the part that asked the reason as to why the interquartile range would remain same?

 

[fahadzaidi12]

by likosp » Tue Oct 12, 2010 3:58 am
what were ur answers 4 interquartile range I GOT 31 USING 99??
likosp

yar i got 30 ya 31 tha i dont remember

@kumar above 60 ka mid point kia tha

 

[likosp]

yar in question 10 what did we have to do in the part that asked to find the mean and standard deviation of the travelling expenses after finding the mean and standard deviation of the values of X ??

i think v were suppose to use da mispoints... i ddnt attmpt it...

 

[likosp]

yar i also used 99 for the interquartile range and got 32....

yar what were the marks for this part?? and the part that asked the reason as to why the interquartile range would remain same?

i thnk frst part was 3 marks and second 2 marks or vice versa.....

 

[likosp]

Guys How difficult did ya find da paper??
Wat abut Q5 and 6...
I think i got both of em wrong

one of the curves was supposed to be symmetrical so that the mean mode and median would be equal......

 

[fahadzaidi12]

guyz so above 60 mid class boundry was what and wat about the mid point

 

[SAUD ASLAM]

I am loosing 11 marks for sure and might be another 3 or 4 marks .What abt u?

 

[Saad Qadir]

11 marks kyun??

 

[adnanj]

yar i took 99 but i think its wrong .....i calculated both 88 n 99 the answers were different but i stayed with 99

I M WRONG

Dude ur right qstn mai likha tha to find THIS int.quar.range which means to find the one that they had mentioned in the above a part

yes.. the question asked to find the interquartile range using THIS data.. which surely meant 99 has to be taken..

 

[adnanj]

yar in question 10 what did we have to do in the part that asked to find the mean and standard deviation of the travelling expenses after finding the mean and standard deviation of the values of X ??

i think v were suppose to use da mispoints... i ddnt attmpt it...

first of all u needed to find the uper limit.. for 60 and over.. which could be anything., if u got that wrong how can u move on the the mean and SD .. u'll get all wrong..

 

[adnanj]

i think 99 should be taken... as the question suggested that it didnot affect and then asked to find the interquartile range which surely means that 99 has to be taken..

So what was ur answer?

it was in between 31- 32...

 

[likosp]

CIE has now begun a policy of giving a very tough qstn in the middle of the paper never seen before so that v get totally tensed and confused and cant attempt the rest of the papr properly....... :/

 

[adnanj]

CIE has now begun a policy of giving a very tough qstn in the middle of the paper never seen before so that v get totally tensed and confused and cant attempt the rest of the papr properly....... :/

u r right.. Q 5 and 6 were so confusing that when we moved to section B we were finding everything difficult and didn't have enough time as well then..

 

[adnanj]

what should we prepare for paper 2???
b/c the past papers r just useless... it didn't work for paper 1

 

[Saad Qadir]

Adnani the IQR had to be taken with 88 and not 99 and they even asked a reason why adding those 11 wud not affect the IQR and da answer to dat was dat both lower quartile and upper quartile were larger than 11...
So it had to be 88...

 

[SAUD ASLAM]

11 marks kyun??

4 marks in Qs 5, 5 marks in prob and 2 marks for that interquartile.How much u loosing?

 

[adnanj]

Adnani the IQR had to be taken with 88 and not 99 and they even asked a reason why adding those 11 wud not affect the IQR and da answer to dat was dat both lower quartile and upper quartile were larger than 11...
So it had to be 88...

yes u r right with the fact that as they were in limits so it won't affect.. but then they said that using ' THIS ' find the intrequartile which means they r asking to take 99...

 

[Saad Qadir]

Umm pata nai in my centre the majority used 88

 

[adnanj]

Umm pata nai in my centre the majority used 88

might be possible its 88 but till now i am confident that 99 has to be taken...
and majority doesn't mean its right.. so wait for the result..

 

[SAUD ASLAM]

Adnani the IQR had to be taken with 88 and not 99 and they even asked a reason why adding those 11 wud not affect the IQR and da answer to dat was dat both lower quartile and upper quartile were larger than 11...
So it had to be 88...

If that was yhe qs ,it maen that inter quartile should remain same in case so the answer should be same hope that they accept both answer.
Saad ask from some of ur friend ,who used 88,the answer bcoz i dont remember.If it is 30 -31 then we r also correct