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Author Topic: S1 and S2 DOUBTS HERE!!!!  (Read 63311 times)

Offline astarmathsandphysics

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Re: S1 DOUBTS HERE!!!!
« Reply #120 on: February 16, 2011, 09:12:03 am »
Hello  Smiley im taking cie s1 and wondering if u know the way to find standard deviation on calculator , i use casio fx-991es and cant find any help on web  Undecided

From memory
Shift mode stat

choose 1 or 2  variable
input data
Choose shift 4
var
Then choose sigma_n or sigma_{n-1}
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Offline astarmathsandphysics

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Re: S1 DOUBTS HERE!!!!
« Reply #121 on: February 16, 2011, 09:15:07 am »
A coin is tossed 10 times
(a) How many different sequences of heads and tails are possible.
(b) How many different sequences containing six heads and four tails are possibles.
(c) What is the probability of getting six heads and four tails.
a)2^10 =1024
b)10C4 or 10C4
c)10C4/2^10
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Saavya

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Re: S1 DOUBTS HERE!!!!
« Reply #122 on: February 17, 2011, 08:09:07 am »
Quote from: astarmathsandphysics on February 16, 2011, 09:12:03 am
From memory
Shift mode stat

choose 1 or 2  variable
input data
Choose shift 4
var
Then choose sigma_n or sigma_{n-1}

Thank You !  :D
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Offline EMO123

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Re: S1 DOUBTS HERE!!!!
« Reply #123 on: February 18, 2011, 03:18:56 pm »
Quote from: astarmathsandphysics on February 16, 2011, 09:15:07 am
A coin is tossed 10 times
(a) How many different sequences of heads and tails are possible.
(b) How many different sequences containing six heads and four tails are possibles.
(c) What is the probability of getting six heads and four tails.
a)2^10 =1024
b)10C4 or 10C4
c)10C4/2^10
thanxx
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Saavya

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Re: S1 DOUBTS HERE!!!!
« Reply #124 on: February 22, 2011, 04:40:22 pm »
can we solve basic binomial distribution questions on calculator ?! if yes then how ??

 
« Last Edit: February 22, 2011, 04:42:08 pm by Saavya »
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Offline EMO123

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Re: S1 DOUBTS HERE!!!!
« Reply #125 on: February 22, 2011, 05:50:29 pm »
Quote from: Saavya on February 22, 2011, 04:40:22 pm
can we solve basic binomial distribution questions on calculator ?! if yes then how ??

 

i think u want every thing in calculator

but for the factorial part
press shift and then press exactly below it
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Saavya

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Re: S1 DOUBTS HERE!!!!
« Reply #126 on: February 22, 2011, 07:12:44 pm »
Quote from: EMO123 on February 22, 2011, 05:50:29 pm
i think u want every thing in calculator

but for the factorial part
press shift and then press exactly below it

lol ! yes  ;)
my tcher sux big time...if we ppl follow what she explains,we'll definitely be ending up with Es and Us in stats...
so why not try to save some time and do what guarantees a full mark   :)


and Thank You  :)
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elemis

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Re: S1 DOUBTS HERE!!!!
« Reply #127 on: February 23, 2011, 11:36:42 am »
Quote from: Saavya on February 22, 2011, 07:12:44 pm
lol ! yes  ;)
my tcher sux big time...if we ppl follow what she explains,we'll definitely be ending up with Es and Us in stats...
so why not try to save some time and do what guarantees a full mark   :)


and Thank You  :)

If you dont show the necessary workings you'll still land up with Es and Us. A correct answer doesnt guarantee full marks.
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Saavya

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Re: S1 DOUBTS HERE!!!!
« Reply #128 on: February 23, 2011, 02:30:05 pm »
Quote from: Ari Ben Canaan on February 23, 2011, 11:36:42 am
If you dont show the necessary workings you'll still land up with Es and Us. A correct answer doesnt guarantee full marks.


the ones i asked for do. =)
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Offline $H00t!N& $t@r

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Re: S1 DOUBTS HERE!!!!
« Reply #129 on: April 04, 2011, 08:17:14 pm »
The letters of the word CONSTANTINOPLE are written on 14 cards, one on each card. The cards are shuffled and then arranged in a straight line.

How many arrangements are there where no two vowels are next to each other?

The answer is: 457228800

I'm not getting the right answer for some reason...  :-\
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Offline Arthur Bon Zavi

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Re: S1 DOUBTS HERE!!!!
« Reply #130 on: April 05, 2011, 05:54:08 am »
Quote from: $H00t!N& $t@r on April 04, 2011, 08:17:14 pm
The letters of the word CONSTANTINOPLE are written on 14 cards, one on each card. The cards are shuffled and then arranged in a straight line.

How many arrangements are there where no two vowels are next to each other?

The answer is: 457228800

I'm not getting the right answer for some reason...  :-\

9 consonants and 5 vowels.
Arrangement for consonants = 9!, thereby we have 10 spaces to fit in the vowels, and they can be arranged in any manner. So arrangement for these : 10C5 X 5

Multiplying all : 9! X 10C5 X 5

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Offline mdwael

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Re: S1 DOUBTS HERE!!!!
« Reply #131 on: April 05, 2011, 12:02:47 pm »
What does  " µ" symbol mean? I saw it in some questions..does it mean anything like sigma means standard deviation? are there any more weird symbols in S1 we should know about? What are the things given in the formula booklet for S1 that we shouldnt learn?
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Alpha

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Re: S1 DOUBTS HERE!!!!
« Reply #132 on: April 05, 2011, 12:08:17 pm »
Quote from: mdwael on April 05, 2011, 12:02:47 pm
What does  " µ" symbol mean? I saw it in some questions..does it mean anything like sigma means standard deviation? are there any more weird symbols in S1 we should know about? What are the things given in the formula booklet for S1 that we shouldnt learn?

"µ" stands for the Greek letter, moew. Equivalent of the mean. You will use it in distributions most often.
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Offline mdwael

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Re: S1 DOUBTS HERE!!!!
« Reply #133 on: April 07, 2011, 12:55:31 pm »
I have attached a question can someone try solving it?
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**RoRo**

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Re: S1 DOUBTS HERE!!!!
« Reply #134 on: April 11, 2011, 05:45:01 pm »
Can someone please solve for me Question 3 in May 2009 with steps?
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