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Edexcel S1 - 15th June, 2016 [Exam Discussion] watch

1. Im freaking out because I just realisedmy calculator was in a mode where in which it gave wronganswers so I think I may have messed up the previous maths and physics papers. I mean thank god I spotted it before 1 but I cant believe I may have messed up my grades for maths and physics and everything. I'm panicking
2. (Original post by Pavinder100)
Attachment 549025How do you work out Var(R) without having to do the whole E(R^2)-((E(R))^2 ?
For 5b_ you should have got R = 10Q + 4
Now, when we need to change the E(Q) to E(R) we use the same formula:

E(Q) = 3
Therefore, E(R) = 10(3) + 4 = 34

Var(Q) = 2
Therefore, Var(R) = (10*10)(2) = 200

3. (Original post by physicsamor)
Im freaking out because I just realisedmy calculator was in a mode where in which it gave wronganswers so I think I may have messed up the previous maths and physics papers. I mean thank god I spotted it before 1 but I cant believe I may have messed up my grades for maths and physics and everything. I'm panicking
thanks for bring down grade boundaries, your'e doing gods work
4. (Original post by Exavior)
What did you all think of the 2015 June paper. If the papernis like this I will ne happy, none of those histograms in it! It was great apart from the end question mixing probability questions with mormal distribution!
I found June 2015 quite tricky to finish under and hour and a half
5. Yes it was correct, why do you have to do 10*10 for variance?
6. Why is this question such a mindf***?...
Took me ages to figure it out, so much time would have been wasted in real exam conditions though

S1 (IAL) Jan 2014 Q5
Click to enlarge...

7. (Original post by KloppOClock)
thanks for bring down grade boundaries, your'e doing gods work
That's funny
8. (Original post by target21859)
Here you go:
Grade boundaires are quite low for this paper. 72 for full ums 58 for an A. Does a hard paper in January mean an easy paper in June?
CHRIST ALMIGHTY, what a BEAST of a statistics paper, sneaky bit of quadratic formula hidden in there. But anyway thanks for posting it, was a laf
9. (Original post by Exavior)
CHRIST ALMIGHTY, what a BEAST of a statistics paper, sneaky bit of quadratic formula hidden in there. But anyway thanks for posting it, was a laf
Yeah I thought it was a beast of a paper as well. If you need any other 2016 papers I have access to them so just ask.
10. Ok so I really need help with conditional probabilities.
With this question in particular...

I know that with part (a) that the...
P(M|L)

=P(MnL)
P(L)

But I don't know why the P(MnL) isn't just P(M)P(L) e.g. 3/5 x 3/10

How do I work out the intersection? Not just for this question but for all these types of questions?
11. ^Someone please explain to me these types of questions in the above post
12. (Original post by target21859)
Yeah I thought it was a beast of a paper as well. If you need any other 2016 papers I have access to them so just ask.
Beast of a paper as in easy or hard? I found it alright - 72/75 made an error on the box plot question. I used 0.75 and not 0.5.

Could you pm the 2016 s2 paper please? s4/c4 as well if you have them
13. any idea of the grade boundaries for 90+ UMS?
14. (Original post by target21859)
Yeah I thought it was a beast of a paper as well. If you need any other 2016 papers I have access to them so just ask.
Ohhh that sound good, I didnt know there were any more 2016 papers so if you could post some more that would be great for some last minuet revision tomorrow! Thank you
15. (Original post by tazza ma razza)
Beast of a paper as in easy or hard? I found it alright - 72/75 made an error on the box plot question. I used 0.75 and not 0.5.

Could you pm the 2016 s2 paper please? s4/c4 as well if you have them
Beast as in hard. However I got 67/75 so if it similar or easier (I cant see it being any harder) then I will be alright. 😀 Looking forward for my last exam!

(I am sorry I dont have any 2016 papers, I got it of a post before me)
16. can't wait to get this exam over and done with
17. If you can do the jan 2016 paper, then you should be feelin pretty ****in confident about this exam
18. (Original post by KloppOClock)
If you can do the jan 2016 paper, then you should be feelin pretty ****in confident about this exam
where's the jan 16 paper?
19. (Original post by KloppOClock)
If you can do the jan 2016 paper, then you should be feelin pretty ****in confident about this exam
Are you taking this exam and if you are are you feeling confident! 😄
20. (Original post by sgill23)
where's the jan 16 paper?
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