Author Topic: Urgent: Maths CIE Stats  (Read 13682 times)

Offline Deadly_king

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Re: Urgent: Maths CIE Stats
« Reply #30 on: October 31, 2010, 11:41:02 am »
yes thats right :) thought i have computing tomorrow :/ haha

Hehe.......Good luck then br0 :)

I don't do computing :D

Offline $H00t!N& $t@r

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Re: Urgent: Maths CIE Stats
« Reply #31 on: October 31, 2010, 01:53:39 pm »
question!  ;D

The following question is from 9709_w09_qp_62:
(i need the solution for 4 a(ii) and b)

4 (a) (i) Find how many different four-digit numbers can be made using only the digits 1, 3, 5 and 6
with no digit being repeated.

(ii) Find how many different odd numbers greater than 500 can be made using some or all of
the digits 1, 3, 5 and 6 with no digit being repeated.

(b) Six cards numbered 1, 2, 3, 4, 5, 6 are arranged randomly in a line. Find the probability that the
cards numbered 4 and 5 are not next to each other.

Thanks in advance  ;)
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A=X+Y+Z, X is work. Y is play. Z is keep your mouth shut"- Albert Einstein

Offline lana

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Re: Urgent: Maths CIE Stats
« Reply #32 on: November 01, 2010, 02:12:35 pm »
question!  ;D

The following question is from 9709_w09_qp_62:
(i need the solution for 4 a(ii) and b)

4 (a) (i) Find how many different four-digit numbers can be made using only the digits 1, 3, 5 and 6
with no digit being repeated.

(ii) Find how many different odd numbers greater than 500 can be made using some or all of
the digits 1, 3, 5 and 6 with no digit being repeated.

(b) Six cards numbered 1, 2, 3, 4, 5, 6 are arranged randomly in a line. Find the probability that the
cards numbered 4 and 5 are not next to each other.

Thanks in advance  ;)

b) cards numbered 4 and 5 next to each other : 5!× 2!
    6 cards  can be arranged in 6!
    6! - (5!×2!) = 480
    probability : 480/6! = 2/3
« Last Edit: November 01, 2010, 02:30:17 pm by lana »
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Offline lana

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Re: Urgent: Maths CIE Stats
« Reply #33 on: November 01, 2010, 02:26:56 pm »
I have a question !! how can I know which measure of central tendency is the most appropriate to represent a set of data ??!!
thank youu  :)
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Offline Deadly_king

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Re: Urgent: Maths CIE Stats
« Reply #34 on: November 01, 2010, 05:25:38 pm »
I have a question !! how can I know which measure of central tendency is the most appropriate to represent a set of data ??!!
thank youu  :)

Am not sure myself.

Hope this helps :)

http://simon.cs.vt.edu/sosci/Site/MMM/mmm.html

http://www.quickmba.com/stats/centralten/

By the way thanks for the answers.:)
+rep

Offline lana

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Re: Urgent: Maths CIE Stats
« Reply #35 on: November 01, 2010, 05:49:02 pm »
Am not sure myself.

Hope this helps :)

http://simon.cs.vt.edu/sosci/Site/MMM/mmm.html

http://www.quickmba.com/stats/centralten/

By the way thanks for the answers.:)
+rep

thank youu !!
and ur so welcome !! =]
thanks for the +rep 
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Offline $!$RatJumper$!$

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Re: Urgent: Maths CIE Stats
« Reply #36 on: November 01, 2010, 05:51:29 pm »

Offline lana

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Re: Urgent: Maths CIE Stats
« Reply #37 on: November 01, 2010, 06:53:48 pm »
another question !! ( sorry !! :P)
(just iv and v)
7 Nine cards, each of a different colour, are to be arranged in a line.
(i) How many different arrangements of the 9 cards are possible?
The 9 cards include a pink card and a green card.
(ii) How many different arrangements do not have the pink card next to the green card?
Consider all possible choices of 3 cards from the 9 cards with the 3 cards being arranged in a line.
(iii) How many different arrangements in total of 3 cards are possible?
(iv) How many of the arrangements of 3 cards in part (iii) contain the pink card?
(v) How many of the arrangements of 3 cards in part (iii) do not have the pink card next to the green
card?
thanks =]
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Offline $H00t!N& $t@r

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Re: Urgent: Maths CIE Stats
« Reply #38 on: November 01, 2010, 07:27:49 pm »
b) cards numbered 4 and 5 next to each other : 5!× 2!
    6 cards  can be arranged in 6!
    6! - (5!×2!) = 480
    probability : 480/6! = 2/3

Thanks alot! +rep  ;)
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A=X+Y+Z, X is work. Y is play. Z is keep your mouth shut"- Albert Einstein

Offline lana

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Re: Urgent: Maths CIE Stats
« Reply #39 on: November 01, 2010, 07:55:19 pm »
Thanks alot! +rep  ;)
I'm just glad to help =]
thanks for +rep
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Freaked12

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Re: Urgent: Maths CIE Stats
« Reply #40 on: November 01, 2010, 09:05:48 pm »
another question !! ( sorry !! :P)
(just iv and v)
7 Nine cards, each of a different colour, are to be arranged in a line.
(i) How many different arrangements of the 9 cards are possible?
The 9 cards include a pink card and a green card.
(ii) How many different arrangements do not have the pink card next to the green card?
Consider all possible choices of 3 cards from the 9 cards with the 3 cards being arranged in a line.
(iii) How many different arrangements in total of 3 cards are possible?
(iv) How many of the arrangements of 3 cards in part (iii) contain the pink card?
(v) How many of the arrangements of 3 cards in part (iii) do not have the pink card next to the green
card?
thanks =]

We have to start from part iii to continue with part iv and v
a permutation of a set of values is an arrangement of those values into a particular order.
so 9p3=504

iv)We have to assume that the pink card has been chosen in a group of 3 cards so now that group has 2 places remaining
8P2=56
There will be three groups in total which can be made from a group of 9 cards and 56 times 8 cards other th&n the pink can fit in two places of a group in which the pink card has already been chosen.
so we multiply 56 * 3 =168

Offline lana

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Re: Urgent: Maths CIE Stats
« Reply #41 on: November 01, 2010, 09:20:38 pm »


thank youu soo soo much that was very helpful
+rep =]
« Last Edit: November 01, 2010, 09:30:55 pm by Requiem »
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Freaked12

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Re: Urgent: Maths CIE Stats
« Reply #42 on: November 01, 2010, 09:29:25 pm »
__ __ 7C1

7C1 __ __

There will be two ways the pink and Green card can shift between themselves as 2!=2
and there are two ways they can stay together

2*2*7=28

504-28=476

Freaked12

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Re: Urgent: Maths CIE Stats
« Reply #43 on: November 01, 2010, 09:30:29 pm »
Explained it in a easier way

~Sf staff at your service

Offline lana

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Re: Urgent: Maths CIE Stats
« Reply #44 on: November 01, 2010, 09:51:47 pm »
Explained it in a easier way

~Sf staff at your service
aaawww you guys are just amazing thank youu =]
''To be yourself in a world that is constantly trying to make you something else is the greatest accomplishment.''