Edexcel GCSE Statistics H June 2013 Solutions

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mrmanps
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Some past solutions and my excellent revision guide

https://www.dropbox.com/s/1x119m45dnq5uua/j10sola.pdf
https://www.dropbox.com/s/c4uali4i37abgop/j10solb.pdf
https://www.dropbox.com/s/1rjtvle9r7jw7zw/j11sola.pdf
https://www.dropbox.com/s/6ucverzum9sl4yx/j11solb.pdf
https://www.dropbox.com/s/yltipsw3oyq2qfr/j12sol.pdf
https://www.dropbox.com/s/0sxn6x2momm1ezf/REVISION%20GUIDE%202013.pdf

Solutions now uploaded...
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socialgain
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Thanks!
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User1206819
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Great thanks!!!! I think on 1b there's an error: it should be 24/120 not out of 100. But other than that it's great! For the how does adding £10 affect the mean I said it increases the mean as opposed to increases it by 10. Do u think that's acceptable?


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User1206819
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(Original post by donkhan)
Can you check your Q8 a please?
Mr M is correct


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L'Evil Fish
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11)c)

Is definitely wrong.

I got it to be -1. Which is perfect negative correlation.

Realistically the gradient should range from -1 to 1.
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User1206819
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(Original post by L'Evil Fish)
11)c)

Is definitely wrong.

I got it to be -1. Which is perfect negative correlation.

Realistically the gradient should range from -1 to 1.
It depends. If u count squares and u end up with -54/52 it is what it is.... If he counted squares wrong it wud be a different story but he didn't.


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L'Evil Fish
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(Original post by Kkg1)
It depends. If u count squares and u end up with -54/52 it is what it is.... If he counted squares wrong it wud be a different story but he didn't.


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But it was 2 blocks to the right for every block down, which on the scale was -1.
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User1206819
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(Original post by L'Evil Fish)
But it was 2 blocks to the right for every block down, which on the scale was -1.
Look at it again...... very closely


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snikutsmullac
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Is it alright if you simplify the fractions you got for the probabilities, cause thats what I did... e.g. 50/100 cancels down to 1/2?
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eddie1221
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(Original post by L'Evil Fish)
But it was 2 blocks to the right for every block down, which on the scale was -1.
It wasn't exactly.. I got -1.04 aswell.
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L'Evil Fish
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(Original post by Kkg1)
Look at it again...... very closely


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No..
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User1206819
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(Original post by L'Evil Fish)
No..
The truth hurts sometimes I know


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L'Evil Fish
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(Original post by Kkg1)
The truth hurts sometimes I know


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Omg, haha, we'll see on results day
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User1206819
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(Original post by L'Evil Fish)
Omg, haha, we'll see on results day
No we won't... Official mark schemes won't be available to us until next may...


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L'Evil Fish
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(Original post by Kkg1)
No we won't... Official mark schemes won't be available to us until next may...


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I don't care about that question in particular... Plus Mark schemes are released to teachers in July.
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User1206819
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Ok
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mrmanps
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(Original post by L'Evil Fish)
I don't care about that question in particular... Plus Mark schemes are released to teachers in July.
If there is a Q you want to query let me know, I may be able to say if you will get it right. The gradient Q I have said in the MS the allowable range
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L'Evil Fish
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(Original post by mrmanps)
If there is a Q you want to query let me know, I may be able to say if you will get it right. The gradient Q I have said in the MS the allowable range
Urmmm... I can't think of other bigger ones, about 95% of our answers are the same so
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Connorbwfc
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For 12b, how many marks will this be 'there is very weak positive correlation and as one judges mark increases the other one does slightly and vice versa'?

Also for the one about Netto do you think 1890 will definitely get the mark?
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Connorbwfc
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Why is 1bii 24/100? I put 24/120
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