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# Levels of Significance-spearman;s rank coefficient watch

1. Hola!
i'm doing unit 4b on Tuesday but the specimen asks about level of significance:
'interpret the significance of your calculated value using figure 2'

figure 2 :
levels of significance:
n 0.5 0.1
12 .506 .712
14 .456 .645
16 .425 .601
18 .399 .564

from that,how do i work it out?
n=17 in this case btw.
I know that if it's aove 0.01 we can be 99% confident in the result and that it didn't occur by chance and 0.05 is only 95% confidence ie 5% likely to have occured by chance but i don;t kow hwoi work it out from that table

PLEASE help me!??!?!?!
confuzzled
2. (Original post by FestiveReece)
Hola!
i'm doing unit 4b on Tuesday but the specimen asks about level of significance:
'interpret the significance of your calculated value using figure 2'

figure 2 :
levels of significance:
n 0.5 0.1
12 .506 .712
14 .456 .645
16 .425 .601
18 .399 .564

from that,how do i work it out?
n=17 in this case btw.
I know that if it's aove 0.01 we can be 99% confident in the result and that it didn't occur by chance and 0.05 is only 95% confidence ie 5% likely to have occured by chance but i don;t kow hwoi work it out from that table

PLEASE help me!??!?!?!
confuzzled

I thought if it was above 0 then it was strong correlation and below 0 a weak correlation
3. (Original post by TickTackToe)
I thought if it was above 0 then it was strong correlation and below 0 a weak correlation
yes but in order to accept or reject our hypothesis,we must compare the critical values and show how strong the relationship between two variable is.

i don;t know how to go in between teh 18 and 16 without simply guessing.
i know the answer but not how they came to that answer
anyone shed some light on this?
i'm desperate lol.
4. Asking this is the Maths forum would have been a better idea perhaps. But anyway, what did you work out as your value for Spearman's Correlation Co-efficient?
5. (Original post by Mathematician!)
Asking this is the Maths forum would have been a better idea perhaps. But anyway, what did you work out as your value for Spearman's Correlation Co-efficient?

OF COURSE!!!!
IDIOT! LOL
it didn't even cross my mind......

the Rs= 0.665 n= 17

so ithe answer is 0.01 therefore we can be 99% confident in the fact that the positive correlation didn;t occur by chance

now i'm confused here.
i just had a maths friend explain it but i'm still a bit sketchy :/

so,we notice the critical values are decreasing. N=16 is .601 whilst n=18 is .564
clearly n=17 slots int eh middle. If the Rs must be equal to or greater than the critical value to be significant.
Obviously, 0.665 is greater than both n=16 and n=18 so it must be greater than nj=17 aswell,meaning we can say that it is of 0.01 significance,yes?

is it essentially a guessing game of sorts?

any chance you could explain it to me jsut so i have a concrete knowledge of it?
thanks in advance...
6. (Original post by FestiveReece)
OF COURSE!!!!
IDIOT! LOL
it didn't even cross my mind......

the Rs= 0.665 n= 17

so ithe answer is 0.01 therefore we can be 99% confident in the fact that the positive correlation didn;t occur by chance

now i'm confused here.
i just had a maths friend explain it but i'm still a bit sketchy :/

so,we notice the critical values are decreasing. N=16 is .601 whilst n=18 is .564
clearly n=17 slots int eh middle. If the Rs must be equal to or greater than the critical value to be significant.
Obviously, 0.665 is greater than both n=16 and n=18 so it must be greater than nj=17 aswell,meaning we can say that it is of 0.01 significance,yes?

is it essentially a guessing game of sorts?

any chance you could explain it to me jsut so i have a concrete knowledge of it?
thanks in advance...
First question: Makes sense!

Second question: It is guess-work in essence.

Third question: No chance I've forgotten all of this!
7. (Original post by Mathematician!)
First question: Makes sense!

Second question: It is guess-work in essence.

Third question: No chance I've forgotten all of this!

lol
thanks anyway!

i think it'll suffice for what would potetnially be a 2 mark question in a geography exam if it comes up-i hope it will...
8. (Original post by FestiveReece)
lol
thanks anyway!

i think it'll suffice for what would potetnially be a 2 mark question in a geography exam if it comes up-i hope it will...
Best of luck with the exam!

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