Arsey's S1 Edexcel Summer 2013 Model Solutions BOTH PAPERS

Then I am expecting 50 - 56,
If i am lucky a B rite?

For the venn diagram I put the right values in but I left only Bblank instead of writing 0. Will i lose a mark for this.

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I did this too! Haha, i thought i was the only one. Surely it is still right?

This is going to be really hard to describe but I'm going to try anyway.

For my venn diagram question, I didn't draw 4 circles for each section

Instead I drew one circle in the middle for P(Bus), and then Three lines from the centre of the circle to the edge of the box I drew around it so there were three other sections for F H and C.

Basically if my venn diagram doesn't look like the one the Arsey drew, but still shows all the information and correct values, will I still get marks.

You are likely to lose at least 1 mark for leaving blanks rather than writing "0".

for writing p= instead of r=, it is likely to depend on how strict they mark you, but since there is no other variable abbreviated "p", you should get the marks.

For the box plot question, I wrote the same 1st two points, and I think you should get 2/2 unless you wrote something which contradicts your statements.

However, I don't think you are likely to get the question regarding unsuitability of mean & stan. dev., due to incorrect use of the term interpolation, since interpolation & extrapolation regards to reliability of estimates, rather than accuracy.

Decent paper, every question had been asked before, nothing sneaky or too hard at all.




1. Correlation and regression - pretty easy but took a long time. Part e) will be poorly answered.


2. Box plots - very easy


3. Probability - pretty easy


4. Mean, sd, median, coding - all pretty simple


5. drv - I thought this was easy but I can see it causing problems


6. Normal distribution - standard.




Quite a bit easier than Jan, but S1 boundaries are generally low as a higher prortion of weaker candidates take S1. The highest summer boundary in the last 10 years was 61.


I am going for 62 for an A.




This summer I will upload solutions to the following Edexcel papers:

Core 1;
Core 2;
Core 3;
Core 4;
FP1;
M1;
M2;
S1;
D1;
D2.

I will try to get hold of some solutions for FP2; FP3 and M3.

I don't do S2

All papers will be uploaded in line with site rules (please don't PM me asking when I will I be uploading them).

I put this! It's a true statement so they should give us the mark, I didn't even consider calculating skewness, oops!

Assuming you marked the outliers in the correct place, then yes, 4/4.

I did this too! Haha, i thought i was the only one. Surely it is still right?

ok thankyu.
and 1 more question. If i get a low A in C1 and low A in C2 and med B in S1.
What would i get in AS overall?

Would you lose a mark for the 2nd last question if you left it as a decimal even though it asked for a percentage?

For the last question, I remember getting an answer of 4.85 for the s.d because i foolishly converted 98% into it's value from the table and saying that it was equal to P(W<210) - P(W<200), do you (anyone who reads this) believe i could get a couple of method marks from this?