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# GCSE edexcel statistics June 27th unofficial mark scheme

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Why bother with a post grad? Are they even worth it? Have your say! 26-10-2016
1. I would appreciate if people would contribute to the answers please

Question 1: create a question about dogs and cats?
= which pet do you prefer out of a dog and a cat. [1]
Question 2: create a sheet they could use for the results of testing if gender affects the type of pet they have?
= gender|type of animal [2]
Question 3: why can you not use a scatter graph?
Question 4: age group?
= 35-44
Question 5:
= 30
Question 6:
=
Question 7:
=
Question 8:
= 7/10
Question 9:
= 8/10
Question 10: what is mutually exclusive
= when two events can't happen at the same time
Question 11:
= 0.09
Question 12:
Question 13: how to take the sample
=

Question 1: create a question about dogs and cats?
= which pet do you prefer out of a dog and a cat. [1]
Question 2: create a sheet they could use for the results of testing if gender affects the type of pet they have?
= gender|type of animal [2]
Question 3: why can you not use a scatter graph?
Question 4: age group?
= 35-44
Question 5:
= 30
Question 6:
=
Question 7:
=
Question 8:
= 7/10
Question 9:
= 8/10
Question 10: what is mutually exclusive
= when two events can't happen at the same time
Question 11:
= 0.09
Question 12:
Question 13: how to take the sample
=
I would love to help you but i've forgotten most of the question lol
3. (Original post by nisha.sri)
I would love to help you but i've forgotten most of the question lol
there was some question about comparative pie charts...
4. Question 3: Because type of pet and gender are qualitative variables, they cannot be represented on a scatter diagram.
5. The last question had a Venn diagram
X Y
(0.3(0.2)0.5)

Is it exhaustive? Give a reason
P(X) * P(Y)
____
P(A∪B) = 0.x
P(A) = 0.y
P(B) = 0.z

What does P(A∩B) =?
6. Does anyone have any ideas on grade boundaries? I thought it was harder then previous years
7. (Original post by bqrs)
Question 3: Because type of pet and gender are qualitative variables, they cannot be represented on a scatter diagram.
Crap! I put because it's using men and women
8. (Original post by Student1220)
Does anyone have any ideas on grade boundaries? I thought it was harder then previous years
Yeh i agree i think it was harder than all of the past papers Maybe 70 ish for A*
9. Okay so;
For the comparative pie chart question I got 6.0 (rounded to 1.d.p) because i used the formula r1=r2 x f2square root/f1square root

For the primary or secondary data question I put primary data since they collect it themselves
The 60 offices one I put cluster sampling
the mean of the sunflowers I got 2.79
The standard deviation I got .709

I completely messed up on the last page!

Can everyone else add anything they remember? xx

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Updated: June 28, 2016
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