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OCR MEI C4 Mathematics June 2016 - Official Thread

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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.
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?
i messed up comprehension too, but its only 20%
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.
Original post by Sophieoo1
Maybe 71 for an A?


You mean an A*?
Oh dear, I think I got tan(theta) = -1/2...
Original post by Cadherin
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
These Grade boundaries would be my only shot at uni
A-5/90
B-4/90
C-3/90
pretty sure i only dropped 5 marks in C4-A so worst comes to worst i got 67/90 which is still an A
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 ?
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
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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i honestly think we will see around 60 for an a

everyone ive spoke to found it awful
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


Yeah, except *>80 for too large
Original post by MintyMilk
Yeah, except *>80 for too large


Oops yeah sorry my bad, ill edit it

Posted from TSR Mobile
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?
I think it's the other way round cause the larger the focal lens the smaller you observe it to be
(edited 7 years ago)
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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!
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
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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