Maths, Addmaths and Statistics: Post your doubts here!

[doctormani]

Re: O'level Maths, Addmaths and Statistics help available he

Statx ques :
7 (a) A school wished to estimate its examination costs per candidate for the coming year using the
previous year’s fees.
For each candidate there was a basic fee of $20 plus an additional fee of $30 for each subject
taken by that candidate. Using these figures, the school estimated that the cost per candidate
would have a mean of $230 and a standard deviation of $90.
However, before the entries were made, the fees had been increased to $25 per candidate
and $35 per subject.
Calculate the actual mean and standard deviation of the cost per candidate which the school
will have to pay for its examination entries in the coming year.

 

[Alchemist4lyf]

Re: O'level Maths, Addmaths and Statistics help available he

Same here. I really need help on that. Examiner Report says it's a scaling question. Just would like someone to help out on this one.

 

[SalmanPakRocks]

Re: O'level Maths, Addmaths and Statistics help available he

^^ Can u tell me the year, this is a bit confusing question !!

 

[doctormani]

Re: O'level Maths, Addmaths and Statistics help available he

Salman itx the ques of year 2009 p2 ques 7... I have more questions even much more difficult than dis

 

[SalmanPakRocks]

Re: O'level Maths, Addmaths and Statistics help available he

Salman itx the ques of year 2009 p2 ques 7... I have more questions even much more difficult than dis

yeah, Today while i was doing 2009, just encountered this one! Will ask my sir about it

 

[hrabedi]

Re: O'level Maths, Addmaths and Statistics help available he

Can you please tell me where to get the answer report for the year 2008,2009 and 2010 for STATISTICS

Do you have any notes available for O level Statistics. If Yes, Plz send me the link.

 

[CaptainDanger]

Re: O'level Maths, Addmaths and Statistics help available he

Can you please tell me where to get the answer report for the year 2008,2009 and 2010 for STATISTICS

Do you have any notes available for O level Statistics. If Yes, Plz send me the link.

You mean the examiner report? Check HERE using this GUIDE

And here are some of the notes...

Statistics: Lecture Notes

Revision Guide of STATISTICS-4040 GCE O Level

 

[khizar22temuri]

Re: O'level Maths, Addmaths and Statistics help available he

CAN ANYONE TELL ME HOW TO UPLOAD A O,LEVEL MATHS AND ADD MATHS PAPERS!!!!!
PLZ SOMEBODY TELL ME!!!

 

[SalmanPakRocks]

Re: O'level Maths, Addmaths and Statistics help available he

CAN ANYONE TELL ME HOW TO UPLOAD A O,LEVEL MATHS AND ADD MATHS PAPERS!!!!!
PLZ SOMEBODY TELL ME!!!

I didn't quite understand what u meant by upload. Anyways if u want to upload anything on this site then I suggest that u look at the tab of "upload attachment" when posting a reply. Go there and then select the file from choose, then click add the file button right next to the choose button. Then wait for the file to get attached. (Will take some time). and then click on post reply.

 

[usman.1995]

Stats....Q....

Pleazz tell anyone how 2 do this..???

 

[SalmanPakRocks]

Re: O'level Maths, Addmaths and Statistics help available he

HEY I NEED HELP WITH STATS
N01/P1/Q8

I have problem finding out the verticle height of Histogram and also with finding the standared deviation.
In standard deviation I tried everything but when I put the formula it gives me Math Error!
Can some please urgently help me in here?

 

[syedalisaboorzaidi]

Re: O'level Maths, Addmaths and Statistics help available he

i need marking scheme of statistics(4040) for year 2010, its urgent i need it before 10 october 2011

 

[SalmanPakRocks]

Re: O'level Maths, Addmaths and Statistics help available he

i need marking scheme of statistics(4040) for year 2010, its urgent i need it before 10 october 2011

Sorry, CIE Never publishes Marking Scheme for Stats except for year 2009

 

[aleezay]

Re: O'level Maths, Addmaths and Statistics help available he

HEY I NEED HELP WITH STATS
N01/P1/Q8

I have problem finding out the verticle height of Histogram and also with finding the standared deviation.
In standard deviation I tried everything but when I put the formula it gives me Math Error!
Can some please urgently help me in here?

mean = 2.05 (correct to 3 sgf)
variance =[{24(4.101) + 36(4.182) + 26(4.223) + 22(4.264) + 12(4.326)}/120] - (2.05)2
= 4.204 - 4.2025
= 0.0015
s.d = square root of 0.0015 = 0.0387 (correct to 3 sgf)

 

[Jai4ever]

Re: O'level Maths, Addmaths and Statistics help available he

any advice for statistics papers????i want to take A*.......so please only good advice require..............

 

[abcde]

Re: O'level Maths, Addmaths and Statistics help available he

If I recall correctly, your exam is due in a few days so it can be assumed that you've completed the syllabus and practised past papers. For now, read the exam tips posted by the Admins. Stay relaxed and don't study on the day of the exam. Don't compare yourself with other candidates at this stage (we all have different study techniques). If you've given it your best shot, you have every reason to believe you'll do good. GOOD LUCK! :good:

 

[SalmanPakRocks]

Re: O'level Maths, Addmaths and Statistics help available he

HEY I NEED HELP WITH STATS
N01/P1/Q8

I have problem finding out the verticle height of Histogram and also with finding the standared deviation.
In standard deviation I tried everything but when I put the formula it gives me Math Error!
Can some please urgently help me in here?

mean = 2.05 (correct to 3 sgf)
variance =[{24(4.101) + 36(4.182) + 26(4.223) + 22(4.264) + 12(4.326)}/120] - (2.05)2
= 4.204 - 4.2025
= 0.0015
s.d = square root of 0.0015 = 0.0387 (correct to 3 sgf)

First of all thank u very much
Can u also help me with histogram height thing? :Bravo:

Actually i was doing it like this direct in the calculator
underoot (Sum of Fx^2/sum of F ) - (sum of Fx/sum of F)^2 = (504.496/120)-(246.64/120)^2 = Math Error.

 

[VelaneDeBeaute]

Re: O'level Maths, Addmaths and Statistics help available he

mean = 2.05 (correct to 3 sgf)
variance =[{24(4.101) + 36(4.182) + 26(4.223) + 22(4.264) + 12(4.326)}/120] - (2.05)2
= 4.204 - 4.2025
= 0.0015
s.d = square root of 0.0015 = 0.0387 (correct to 3 sgf)

First of all thank u very much
Can u also help me with histogram height thing? :Bravo:

Actually i was doing it like this direct in the calculator
underoot (Sum of Fx^2/sum of F ) - (sum of Fx/sum of F)^2 = (504.496/120)-(246.64/120)^2 = Math Error.

@Salman as per your calculations,
4.204 - (2.205)^2 = 4.204 - 4.862 = -0.658
And there, the underroot ov a negative number is not possible ! Check it again !! The values !

 

[SalmanPakRocks]

Re: O'level Maths, Addmaths and Statistics help available he

mean = 2.05 (correct to 3 sgf)
variance =[{24(4.101) + 36(4.182) + 26(4.223) + 22(4.264) + 12(4.326)}/120] - (2.05)2
= 4.204 - 4.2025
= 0.0015
s.d = square root of 0.0015 = 0.0387 (correct to 3 sgf)

First of all thank u very much
Can u also help me with histogram height thing? :Bravo:

Actually i was doing it like this direct in the calculator
underoot (Sum of Fx^2/sum of F ) - (sum of Fx/sum of F)^2 = (504.496/120)-(246.64/120)^2 = Math Error.

@Salman as per your calculations,
4.204 - (2.205)^2 = 4.204 - 4.862 = -0.658
And there, the underroot ov a negative number is not possible ! Check it again !! The values !

I do it like this always, and there is no problem in my values expect that i rounded off fx= 2.55 to 2.6. this cause the answer to go wrong!!

 

[VelaneDeBeaute]

Re: O'level Maths, Addmaths and Statistics help available he

I solved the question again ! The mean is basically 246.04 not 246.64 !! The answer comes right if you use 04 !! Do it again now !!