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OCR MEI S3 (Statistics 3) - June 12th 2014

Anyone doing this one this year?
(edited 9 years ago)

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No one? ^^
Original post by Political Cake
No one? ^^

Are you doing S3? I have not revise for S3 coming on this Thursday :frown:
Original post by Chollymira
Are you doing S3? I have not revise for S3 coming on this Thursday :frown:


Yep... it's gonna be fun! Just having done S2 xD
Reply 4
Avatar for slm95
slm95
Yh I have S3 tomorrow. Out of interest, what is your policy on accuracy? I.e. when you work out an s.d. to use in normal distribution questions for example, to how many decimal places do you quote it?
Original post by slm95
Yh I have S3 tomorrow. Out of interest, what is your policy on accuracy? I.e. when you work out an s.d. to use in normal distribution questions for example, to how many decimal places do you quote it?


I generally try to be as accurate as I can be, however for any final answer I'll go down to 3 or 4 s.f. :smile:
Everyone ready? :colondollar:
Provided there are no really obscure sampling questions, this should be alright :tongue:
Reply 8
Avatar for Naju
Naju
Does anyone has the june 2013 paper ?
please post ASAP
thanks
I still can't get my head around the degrees of freedom for the chi-squared GOF test... it's number of cells - 1, then -1 for any merged cells right? Then -1 again for an estimated model parameter...


Edit: Never mind I've just got to grips with it xD
(edited 9 years ago)
How did we find that?


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Such an terrible table >.<
Original post by Chollymira
Such an terrible table >.<


You talking about the paired t-test table? xD That was a long one!
Reply 13
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jaetpa
1
Ouch.
Reply 14
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slm95
tough paper, what was going on with the first part of question 2? what was the null hypothesis, mew=1.05 or =1.02 (if they are the right numbers)
Original post by slm95
tough paper, what was going on with the first part of question 2? what was the null hypothesis, mew=1.05 or =1.02 (if they are the right numbers)


The first part used 1.02 (T-test)

The second part used 1.05 (Wilcoxon)
Reply 16
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slm95
Original post by googlebotsgoogle
The first part used 1.02 (T-test)

The second part used 1.05 (Wilcoxon)


Good.
Original post by slm95
tough paper, what was going on with the first part of question 2? what was the null hypothesis, mew=1.05 or =1.02 (if they are the right numbers)


I think it was H0: µ=1.02 and H1: µ<1.02 in the first one, the t-test.
And then it was 1.05 in the second part, the wilcoxen test.
Reply 18
Avatar for jaetpa
jaetpa
1
So is it only me that ran out of time and barely touched the last question? And as I usually request, anyone got a copy of the paper? :smile:
Reply 19
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jaetpa
1
And oh, just remembered, what was the proportion of people that didn't have the minimum test score ratio to do that job in the company? Where Z needed to be at least 0.6X or something?


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