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# S1 June 2016 UK Model Answers (Edexcel)

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Why bother with a post grad? Are they even worth it? Have your say! 26-10-2016
1. (Original post by kprime2)
M4 is beyond me x_x
M2?
2. 55/75-C1
58/75-C2
48/75-S1

What grade do you think this will be?
3. 65/75
4. (Original post by Hasanalm)
55/75-C1
58/75-C2
48/75-S1

What grade do you think this will be?
Probably B
5. (Original post by edothero)
M2?
Yeah if I can remember it. It'll come back to me let's hope
6. (Original post by kprime2)
Probably B
For question 3a, I wrote sum of x squared as 958.88 as opposed to the actual 985.88, then carried on with the calculation as so. Will I lose all 3 marks for this error or will I get some marks?

For 4b, I wrote independent so P(B AND D)= P(B) x P(D). Will this get me one mark?

For 4di and 4dii, will I get any marks for writing out the formula , so for I 4di wrote that is is equal to P(D AND R AND B) divided by P(R AND B) and for 4dii I wrote that it is equal to P(D AND R AND NOT B) divided by P(R AND NOT B). Will I get any marks for laying these formulas out?

For question 5a, I got the width right but height wrong. Will this only get me 1/3 marks?

For 5e I said that it may be a good decision as the median and mean are quite similar, will this get me any marks?

Thanks mate<3
7. Hey did you do any mark schemes for the C1 or C2 papers?
8. (Original post by kprime2)
60 will be at least an A
what would you say a B would be this year? it was 52 last year
9. (Original post by imran_)
what would you say a B would be this year? it was 52 last year
49
Hey did you do any mark schemes for the C1 or C2 papers?
C1 has been done by Arsey

there is a really nice mark scheme style solutions to the C2 somewhere on TSR
11. (Original post by Hasanalm)
For question 3a, I wrote sum of x squared as 958.88 as opposed to the actual 985.88, then carried on with the calculation as so. Will I lose all 3 marks for this error or will I get some marks?

For 4b, I wrote independent so P(B AND D)= P(B) x P(D). Will this get me one mark?

For 4di and 4dii, will I get any marks for writing out the formula , so for I 4di wrote that is is equal to P(D AND R AND B) divided by P(R AND B) and for 4dii I wrote that it is equal to P(D AND R AND NOT B) divided by P(R AND NOT B). Will I get any marks for laying these formulas out?

For question 5a, I got the width right but height wrong. Will this only get me 1/3 marks?

For 5e I said that it may be a good decision as the median and mean are quite similar, will this get me any marks?

Thanks mate<3
ahhh I have no clue about marks won and lost.

What I can advise you to do is look for past papers with similar questions and see how the mark scheme awarded marks for them.
12. (Original post by kprime2)
49
really? that seems too low ^,^
13. (Original post by imran_)
really? that seems too low ^,^
It seems average but for a hard paper like this, expect low grade boundaries is all i am going to say
14. Thank you so much!!! LEGEND
15. Thank you so much for this!

Is it just me or is question one not there?
16. (Original post by undercxver)
Thank you so much for this!

Is it just me or is question one not there?

It's you
17. (Original post by kprime2)
ahhh I have no clue about marks won and lost.

What I can advise you to do is look for past papers with similar questions and see how the mark scheme awarded marks for them.
Yes please, that would be great.
18. (Original post by Hasanalm)
Yes please, that would be great.
Yeah do it
19. When you said the PMCC value r increases, did you mean that it goes closer to 0 or does it get closer to -1?
20. (Original post by kprime2)
Soz for the delay. Got caught up with the Euro games

I thought this was quite tricky
For Q3b)

If you compare the formulae for Variance and Syy, you'll notice that Syy = n x Var(Y), which makes it a lot easier!
I got the same answer tho.

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