A level Statistics doubt??Post your doubts here!

[Alice123]

i need help in http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s12_qp_63.pdf
I'm stuck in Q4(ii)

Draw a sum table... if u cant lemme knw now

 

[Alice123]

anyone plz help me in Q1 (ii) Anika Raisa kiara15 syed1995 or any one
http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_w09_qp_62.pdf

A star

 

[ShaiqUddin]

Draw a sum table... if u cant lemme knw now

Yeah plz tell me..

 

[Alice123]

Yeah plz tell me..

Okay i've done table.. Count the no of 2s, 3s 4s 5s n 6 s.. make a probability distribution table with that

 

[syed1995]

Good Luck for the paper everyone..! May Allah make us all get As and A*s in our papers

 

[A star]

Good Luck for the paper everyone..! May Allah make us all get As and A*s in our papers

Ameen . but thing s dont look so good the paper i am doing made me dizzy

 

[syed1995]

Ameen . but thing s dont look so good the paper i am doing made me dizzy

Which one?

 

[A star]

http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_w09_qp_62.pdf hell every single question except last three and second i coudnt do parts

 

[Alice123]

Ameen . but thing s dont look so good the paper i am doing made me dizzy

dnt solve papers nw, jus go thru yr book... Inshallah u'll do gr8... n see the nov 2011 wala cu frequency qs the last part

 

[aleezay]

I have the same doubt but i dont understand why do we have to do this step to get 0.97 ? Like what is clue for me to do this step?

Theres no clue .. I mean its part of the working. You dont HAVE to do any extra working to get .97, it jut comes. If you know what i mean.

 

[aleezay]

anyone plz help me in Q1 (ii) Anika Raisa kiara15 syed1995 or any one
http://papers.xtremepapers.com/CIE/Cambridge%20International%20A%20and%20AS%20Level/Mathematics%20(9709)/9709_w09_qp_62.pdf

For a normal distribution, 75% data lies below the upper quartile, 75% lies above the lower quartile and 50% lies in the interquartile range. Use any one of the resulting eqs and ull get the answer
P(X<63)= 0.75
P(X>39)= 0.75
P(39<X<63)= .5

 

[syed1995]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_w09_qp_62.pdf hell every single question except last three and second i coudnt do parts

Ah yes this one was a real *****.

 

[x-gamer-x]

For a normal distribution, 75% data lies below the upper quartile, 75% lies above the upper quartile and 50% lies in the interquartile range. Use any one of the resulting eqs and ull get the answer
P(X<63)= 0.75
P(X>39)= 0.75
P(39<X<63)= .5

thanks sis, thats informative

 

[A star]

For a normal distribution, 75% data lies below the upper quartile, 75% lies above the upper quartile and 50% lies in the interquartile range. Use any one of the resulting eqs and ull get the answer
P(X<63)= 0.75
P(X>39)= 0.75
P(39<X<63)= .5

ahh yes i have to review all formulaes i dont know y stats makes me feel after i found out the answer that y didnt i write it it was sooo easy :/

 

[A star]

Ah yes this one was a real *****.

i have to thank Alice123 for it or i wouldhave beeen dead if i hadent reviewed it

 

[A star]

hey guys please answer asap if i find any answer unbelievable through normal can i do it through binomial ? @anikaraisa @mostafamotani

 

[x-gamer-x]

For a normal distribution, 75% data lies below the upper quartile, 75% lies above the upper quartile and 50% lies in the interquartile range. Use any one of the resulting eqs and ull get the answer
P(X<63)= 0.75
P(X>39)= 0.75
P(39<X<63)= .5

have u got any more like that
i knew 3 (i) 68% lies within mean-Sd and mean+Sd
(ii) 95% lies within mean-2Sd and mean+2Sd
(iii) 99% lies within mean-3Sd and mean+3Sd

 

[A star]

have u got any more like that
i knew 3 (i) 68% lies within mean-Sd and mean+Sd
(ii) 95% lies within mean-2Sd and mean+2Sd
(iii) 99% lies within mean-3Sd and mean+3Sd

first one is wrong its actually 2/3 and through calcularion simple accuracy marks may b lost

 

[x-gamer-x]

first one is wrong its actually 2/3 and through calcularion simple accuracy marks may b lost

but its written in book that 68% lies within one Sd

 

[A star]

but its written in book that 68% lies within one Sd

my book it says 2/3
can you screen shot that page pls?