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# OCR MEI C4 Mathematics June 2016 - Official Thread watch

1. My guess:

100 UMS = 81/90
90 UMS = 74/90
A = 67/90

Tougher than last year by a long way, but by no means the toughest ever.
2. (Original post by Slenderman)
Guys what did you do for the last 4 marker on the comp about percentages.

Since it said 'about right' I just classed the 70 and 80 together then went on through there.
Yeah I did the same but I think I've got them the wrong way round, would a larger focal length preference mean that they would think it would be too small?
3. i messed up comprehension too, but its only 20%
4. (Original post by Slenderman)
All correct.
I got 90-56 for the angle. I worked out the angle between AG and the perpendicular to the plane and took away 90.
5. (Original post by Sophieoo1)
Maybe 71 for an A?
You mean an A*?
6. Oh dear, I think I got tan(theta) = -1/2...
My guess:

100 UMS = 81/90
90 UMS = 74/90
A = 67/90

Tougher than last year by a long way, but by no means the toughest ever.
http://prntscr.com/bkftb7
8. These Grade boundaries would be my only shot at uni
A-5/90
B-4/90
C-3/90
9. pretty sure i only dropped 5 marks in C4-A so worst comes to worst i got 67/90 which is still an A
10. for A*
june 15: 81
june 14: 75
june 13: 73
jan 13: 81
jun 12: 73
jan 12: 72
june 11: 70
jan 11: 80
ect.... so an average paper has a boundary of roughly 76/90.

what do people think about the relative difficulty of this paper ? i think the parametric equation question alone is going to bring down the boundaries a bit. i would guess a boundary of maybe 75 ?
11. (Original post by DAWG123)
for A*
june 15: 81
june 14: 75
june 13: 73
jan 13: 81
jun 12: 73
jan 12: 72
june 11: 70
jan 11: 80
ect.... so an average paper has a boundary of roughly 76/90.

what do people think about the relative difficulty of this paper ? i think the parametric equation question alone is going to bring down the boundaries a bit. i would guess a boundary of maybe 75 ?
Yeah I agree and maybe the second part of the stacked triangles question. Tbh I thought the comprehension was harder than usual
12. (Original post by Crozzer24)
Yeah I did the same but I think I've got them the wrong way round, would a larger focal length preference mean that they would think it would be too small?
<70Focal length found it to small
70-80 found it just right
>70 Focal length found it too largr

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13. i honestly think we will see around 60 for an a

everyone ive spoke to found it awful
14. (Original post by HFancy1997)
<70Focal length found it to small
70-80 found it just right
>70 Focal length found it too largr

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Yeah, except *>80 for too large
15. (Original post by MintyMilk)
Yeah, except *>80 for too large
Oops yeah sorry my bad, ill edit it

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16. (Original post by HFancy1997)
<70Focal length found it to small
70-80 found it just right
>70 Focal length found it too largr

Posted from TSR Mobile
Wouldnt it be <70 found it too large?
and >80 found it too small?
The larger the focal length, the smaller the field of view and thus images appear larger.
So for those above 80mm will prefer a larger image and will therefore think it looks too small, whilst those beneath 70 will be used to a larger field of view, so 75mm will look too large?
17. I think it's the other way round cause the larger the focal lens the smaller you observe it to be
18. (Original post by Danny.L)
Wouldnt it be <70 found it too large?
and >80 found it too small?
The larger the focal length, the smaller the field of view and thus images appear larger.
So for those above 80mm will prefer a larger image and will therefore think it looks too small, whilst those beneath 70 will be used to a larger field of view, so 75mm will look too large?
Yeah that's what I think! I originally put the other when in a rush but then changed it as those preferring larger focal lengths will find it too small!
19. (Original post by Danny.L)
Wouldnt it be <70 found it too large?
and >80 found it too small?
The larger the focal length, the smaller the field of view and thus images appear larger.
So for those above 80mm will prefer a larger image and will therefore think it looks too small, whilst those beneath 70 will be used to a larger field of view, so 75mm will look too large?
Yeah, that must have been what we both meant. I went over the logic a good 10 times in the exam, so I'd be surprised if I got it wrong
20. (Original post by Danny.L)
Wouldnt it be <70 found it too large?
and >80 found it too small?
The larger the focal length, the smaller the field of view and thus images appear larger.
So for those above 80mm will prefer a larger image and will therefore think it looks too small, whilst those beneath 70 will be used to a larger field of view, so 75mm will look too large?
Thats what i thought

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