Official Thread: OCR MEI S2/M1

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Did anyone reject h0 for the rank test and the 11 marker, and accept h0 for the chi squared test?

I'm terrible at remembering what happened in exams, but I do seem to remember it going reject; accept; reject. So, assuming that's not false memory, I think so!
But again, I just remember there being 2 of 1 and 1 of another so this is vague af.

Edit: Unofficial MS says accept; accept; reject, and I got the same numbers as him so I think that might be the way acc. Yey memories.

(edited 7 years ago)

Reply 181

KingAweT

Does anyone have the m1 june 15 paper for revision purposes?

Reply 182

ComputerMaths97

Original post by Leechayy

Dunno if this'll help you guys out but...
:top:

Posted from TSR Mobile

Thanks!

If this post gets a few reps I'll do a full unofficial mark scheme (it's worth doing it if helps more than just me :biggrin:

)

(edited 7 years ago)

Reply 183

ComputerMaths97

If you guys want a full in depth unofficial mark scheme for S2 let me know (or rep the post above to let me know indirectly ^^)

(edited 7 years ago)

Reply 184

liverpool2044

http://www.mei.org.uk/files/2000papers/m105ja.pdf

can someon explain 2iii to me, how are the angles 120 30 and 30

Reply 185

username2640523

Original post by ComputerMaths97

Thanks!

If this post gets a few reps I'll do a full unofficial mark scheme (it's worth doing it if helps more than just me :biggrin:

)

please do

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Reply 186

11234

Original post by ComputerMaths97

What do you mean, like the difference between 0.4567 and 0.4568 for example?

I reckon boundaries will be higher. Was very similar to last year, a little easier in some aspects. The hardest part (i.e the part that I reckon most people lost marks on) was the last part, which was in last years paper and therefore more people would've been prepared for it.

Yep thats what I mean, would I lose any marks do you really reckon it will be 65+, I thought there was a lot for silly errors and not sure about the monotonic question

Reply 187

ComputerMaths97

Original post by 11234

Yep thats what I mean, would I lose any marks do you really reckon it will be 65+, I thought there was a lot for silly errors and not sure about the monotonic question

You will lose marks if you made a mistake usually yes. I reckon so, was a very standard paper. Yeah that monotonic (or no assumption?) question will just mean that the 100 UMS boundary will probs be 71

Reply 188

ComputerMaths97

Here is my unofficial S2 MEI OCR June 2016 Mark Scheme

A few things to add:

Spoiler

S2 June 2016 Unofficial Mark Scheme:

Spoiler

Phew that took SO LONG :biggrin:

Please let me know of any errors I made :smile:

Would appreciate the reps :wink:

Let me know how you think you did! I think I got anywhere from 69/72 to 72/72 based on memory of my answers not being perfect :biggrin:

(edited 7 years ago)

Reply 189

Leechayy

Original post by ComputerMaths97

Here is my unofficial S2 MEI OCR June 2016 Mark Scheme

A few things to add:

Spoiler

S2 June 2016 Unofficial Mark Scheme:

Spoiler

Phew that took SO LONG :biggrin:

Please let me know of any errors I made :smile:

Would appreciate the reps :wink:

Let me know how you think you did! I think I got anywhere from 69/72 to 72/72 based on memory of my answers not being perfect :biggrin:

Thankyou for writing all this out! :smug:

Assuming everything is correct here, I have 69-70 marks :ahee:

For the 0.9502 one, I did it like this:

Phi^-1(0.05)= -1.645
-1.645 x 3400 + 50600 < 45000
But stupid me said it was invalid rather than valid so I lose my marks there

Other than that, I'm good :redface:

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Reply 190

WhiteBison

Original post by ComputerMaths97

Here is my unofficial S2 MEI OCR June 2016 Mark Scheme

A few things to add:

Spoiler

S2 June 2016 Unofficial Mark Scheme:

Spoiler

Phew that took SO LONG :biggrin:

Please let me know of any errors I made :smile:

Would appreciate the reps :wink:

Let me know how you think you did! I think I got anywhere from 69/72 to 72/72 based on memory of my answers not being perfect :biggrin:

Appreciate this. Luckily that all looks really familiar! I remember the hypothesis conclusion ratio being 2:1 (as you've done) but I can't seem to remember what order they were in or whether it was 2 rejects or 2 accepts. My numbers are the same though so I guess I must have done it the same as you. :tongue:

Have a rep.

Edit: Ah yes reading the conclusions it's all flowing back. Idk why I suffer such brain-death when I leave an exam.

(edited 7 years ago)

Reply 191

jack.lp.thompson

Original post by KingAweT

Does anyone have the m1 june 15 paper for revision purposes?

Here you go. Sorry if a bit last minute and for being a bit of a bad copy but better than nothing! :smile:

Do you know if you have to underline vectors? (eg i and j) Will we loose marks if we dont??

June 2015 M1.compressed.pdf933.1KB

Reply 192

groovy_q

Original post by ComputerMaths97

Here is my unofficial S2 MEI OCR June 2016 Mark Scheme

A few things to add:

Spoiler

S2 June 2016 Unofficial Mark Scheme:

Spoiler

Phew that took SO LONG :biggrin:

Please let me know of any errors I made :smile:

Would appreciate the reps :wink:

Let me know how you think you did! I think I got anywhere from 69/72 to 72/72 based on memory of my answers not being perfect :biggrin:

For the hypothesis test in question one, the person wanted to know if there was NEGATIVE association, so wouldnt H1 be there is negative association between percentage and fertiliser?

(edited 7 years ago)

Reply 193

ComputerMaths97

Original post by groovy_q

For the hypothesis test in question one, the person wanted to know if there was NEGATIVE association, so wouldnt H1 be there is negative association between percentage and fertiliser?