Statistics Paper 62 -- How was it?!

[Bushrafareed]

was ans to q1 was something like , 2154?

 

[Sidma khan]

Me too!

but its not ryt or is it?

 

[Jaf]

but its not ryt or is it?

It is.

 

[floral123]

was ans to q1 was something like , 2154?

yes i also got something like this...i wonder is it correct??
how did u do?
i opened the brackets like (a-b)2 and then put the values from the data given....

 

[Bushrafareed]

i checked the formula sheet and in there there were 2 formulas for standard deviation , 1) (Ex2 /n)-Ex/n 2)E(x-mean)^2/n , so i converted the equation in this form and solved

 

[Sidma khan]

It is.

R u sure?? I subtracted the probability of 0,1,2 from 1....its not ryt?

 

[Silent Hunter]

yes i also got something like this...i wonder is it correct??
how did u do?
i opened the brackets like (a-b)2 and then put the values from the data given....

well you had to take out SD from one of the two equations in MF9 then put this in the other equation and you get the answer. it was around (five thousand something)

 

[Sidma khan]

i checked the formula sheet and in there there were 2 formulas for standard deviation , 1) (Ex2 /n)-Ex/n 2)E(x-mean)^2/n , so i converted the equation in this form and solved

i also got this one! but rounded it of to 3 sf ie 2150

 

[Sidma khan]

well you had to take out SD from one of the two equations in MF9 then put this in the other equation and you get the answer. it was around (five thousand something)

i also did like that but i think mera 2000 sumthing he tha waise i dont really remember.. all i remember is that i was doing it correctly!

 

[Bushrafareed]

i also got this one! but rounded it of to 3 sf ie 2150

You need to round off to 3 significant figure only decimal figures i guess

 

[Sidma khan]

You need to round off to 3 significant figure only decimal figures i guess

Dont know....maybe!

 

[Sidma khan]

Plz guys go to this thread and comment!
http://www.xtremepapers.com/community/threads/gt-for-a-in-maths-and-chem.16508/#post-285219

 

[Silent Hunter]

what about the p n c one? and that biscuits one? think so i did some part of them wrong if not completely rest Fine Alhamdulilah

 

[Bushrafareed]

Dont know....maybe!

Per it's okay. I don't think there would be negative marking for that

 

[Sidma khan]

Per it's okay. I don't think there would be negative marking for that

Yeah m thinking the same

 

[Sidma khan]

w

Per it's okay. I don't think there would be negative marking for that

wasie yaar wo exactly 2 biscuits wala kaise karna tha?

 

[Silent Hunter]

what about the p n c one? and that biscuits one? think so i did some part of them wrong if not completely rest Fine Alhamdulilah

ANYBODY?

 

[Sidma khan]

ANYBODY?

P n C??

 

[Bushrafareed]

w
wasie yaar wo exactly 2 biscuits wala kaise karna tha?

Kisi part ka ans 10/18 and some part 1/3

 

[Silent Hunter]

well i think it was question 5 ? the part A and part B one? where we had to select 6 question smthng like that