Statistics S1 post your doubts here

[soooso]

U know wat I would like to tell you abt my last year igcse maths paper 4 I had just messed it up and was worried all over the holidays really badly but in the end I got an A so I would like to say don't worry u and everyone else will inshallah get an A in all subjects

awesome ,, i hope to get A's in all AS subjects ,,,,, me too in igcse i got 4 A's and A* and i'm retaking the B's this year

 

[hassaan10293]

you might just loos a mark

But then Won't it be important cause they merge P1 and S1?

 

[moonangel996]

Nope i am in as

Good luck

 

[Kamihus]

Good luck

Did you look at the solutions?

 

[moonangel996]

Did you look at the solutions?

yeah i did and i didnt do well !!

 

[ZaqZainab]

But then Won't it be important cause they merge P1 and S1?

idk

 

[soooso]

PLZZZZ answer me
guys for question 5 part ii) it should be as the numbers that start by 4 =6*5*4=120 and the numbers that start by 3 = 6*5*4=120and by adding them its 24o
AM I RIGHT????

 

[hassaan10293]

idk

Well lets pray to Allah and hope we get good marks!!

 

[Charlotte20102013]

Hi. Can someone tell me how to determine when should I use the continuity correction and when to use only the X~Bin? I know in general you should use continuity correction when approximating Binomial distribution to Normal distribution. But that is what I don't understand. Could you guys maybe provide me some examples n explanations when to use and when not to? Thanks.

 

[emma914]

can someone help me with a summary on how to handle questions on continuity
I don't seem to get it at all

 

[ZaqZainab]

can someone help me with a summary on how to handle questions on continuity
I don't seem to get it at all

If P(X=n) use P(n – 0.5 < X < n + 0.5)
If P(X>n) use P(X > n + 0.5)
If P(X≤n) use P(X < n + 0.5)
If P (X<n) use P(X < n – 0.5)
If P(X ≥ n) use P(X > n – 0.5)

 

[Charlotte20102013]

Can someone exaplain to me how to get the answer to question 6(ii) ? http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_s10_qp_61.pdf

 

[emma914]

If P(X=n) use P(n – 0.5 < X < n + 0.5)
If P(X>n) use P(X > n + 0.5)
If P(X≤n) use P(X < n + 0.5)
If P (X<n) use P(X < n – 0.5)
If P(X ≥ n) use P(X > n – 0.5)

How do u know when to use continuity in a question?

 

[ZaqZainab]

How do u know when to use continuity in a question?

A continuity correction factor is used when you use a continuous function to approximate a discrete one. In simple terms, you use it when you want to approximate a binomial with a normal distribution.

 

[emma914]

can someone please show me how to get k
question 4(ii)
9709 s13 62

 

[manutd96]

http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_s11_qp_61.pdf

for question 6(i), the upper class boundaries are for example 100 or 100.5?


http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_s13_qp_63.pdf

6(i), upper class boundaries are 40 or 40.5?

they are similar questions, pls help thank you

 

[Crimson-Saint]

i need help in stats!!(p62) Anyone has kik?