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# Edexcel GCSE Mathematics A Higher Paper 2016 Unofficial Markscheme

1. 3b)teacher asks students to do a questionnaire, why might the sample be bad?

A: biased, due to same age range??- not 100%
2. (Original post by moononthetides)
what would 53/100 be?
Not A*
3. (Original post by AGcseStudent2016)
3b)teacher asks students to do a questionnaire, why might the sample be bad?

A: biased, due to same age range??- not 100%
Not a large enough sample size; 10? students does not represent a general populous.
4. did anyone find that test hard or is it just me ?
5. (Original post by ellamoon_22)
Can u send me it or something or tell me the topics
I'll pm u in a bit
6. (Original post by Aol1)
Anyone know what grade they think 80/100 will be?
I think prob An a star
7. (Original post by #1Mathlete)
Not A*
i kinda guessed that... but thanks
8. (Original post by AGcseStudent2016)
thats right mate me and majority of my mates got that
9. What was the answer to the standard form question? I think I got 1.75 X 10 to the 10
10. (Original post by carolinrev)
yass i got that !!!
Coordinates were (1, 2.5), (5, 7)

How can the midpoint be totally negative if the two points were positive(on the upper part of the graph??
Surely the midpoint would be somewhere near the coordinates right?
I put the midpoint was ( 3, 4.75)
11. (Original post by iMacJack)
This is very hard to visualise from words, any rough drawing for me to go off of?

Posted from TSR Mobile
12. (Original post by angelax)
What was the answer to the standard form question? I think I got 1.75 X 10 to the 10
7*10^8
13. what was the envelope question again and what was the answer
14. (Original post by mrpaper)
I'm pretty sure it is 0.76.
It asked for the probability of it not raining and the match not being cancelled.
I got 7.6/100
15. what was question 15
and how do you work out question 11
thanks.
16. Small triangle = 1/2 * root3/3 * root2/2 = root6 /12

Big triangle = 1/2 * root2/2 * root2/2 = 2/8 = 1/4

Shaded region = Big - Small

= 1/4 - root6/12

= 3/12 - root6/12

= (3-root6)/12
17. what was the probability tree answer
18. (Original post by #1Mathlete)
Not A*
a B. but don't worry, you can still get an A with 80% on the calculator paper
19. (Original post by Hello5553)
what was the envelope question again and what was the answer
Small packs (x) have 5 envelopes
Large packs (y) have 20 envelopes
Give a formula for total (T) number of envelopes

T=5x+20y
20. (Original post by gcseexamz)
Coordinates were (1, 2.5), (5, 7)

How can the midpoint be totally negative if the two points were positive(on the upper part of the graph??
Surely the midpoint would be somewhere near the coordinates right?
I put the midpoint was ( 3, 4.75)
It didn't ask for the midpoint. (1, 2.5) was the midpoint.

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