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PostPosted: Thu Oct 17, 2013 1:16 pm 
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Joined: Sun Jul 18, 2010 8:02 pm
Posts: 86
Have tried to understand conversion of raw to UMS - understand principle but

if the Chem unit 2 paper is out of 60 and you look at aqa boundaries for points/UMS points why out of 90?
i don't get it

any help from scientists and mathematicians - its for AQA Chemistry unit 2
Bascially how many raw points do you need out of 60 to gain maximum mid A* UMS equivalent - i know 90 UMS = A*
thanks


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PostPosted: Thu Oct 17, 2013 1:23 pm 
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Joined: Fri Sep 15, 2006 8:51 am
Posts: 8117
all very complex - I found the best thing was to ask the kids to explain

http://filestore.aqa.org.uk/over/stat_p ... E-2013.PDF

I think Chem 2 is the paper CH2HP and is out of 60 .. suspect this is the one that you are looking at?

then to find the UMS for that paper try using this:

http://www.aqa.org.uk/exams-administrat ... rks-to-ums


it is possible using this to print out the table for all the raw scores and their UMS - note however that no 2 modules are the same...... and can vary from one sitting to another



CH2HP - Chemistry Unit 2 Tier H - June 2013
Grade A* A B C D
Raw Mark 44 35 26 18 10
UMS 90 80 70 60 50

Raw Mark UMS
1 8
2 15
3 23
4 30
5 38
6 45
7 46
8 48
9 49
10 50
11 51
12 53
Raw Mark UMS
13 54
14 55
15 56
16 58
17 59
18 60
19 61
20 63
21 64
22 65
23 66
24 68
Raw Mark UMS
25 69
26 70
27 71
28 72
29 73
30 74
31 76
32 77
33 78
34 79
35 80
36 81
Raw Mark UMS
37 82
38 83
39 84
40 86
41 87
42 88
43 89
44 90
45 91
46 92
47 93
48 94
Raw Mark UMS
49 96
50 97
51 98
52 99
53 100
54 100
55 100
56 100
57 100
58 100
59 100
60 100


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PostPosted: Fri Oct 18, 2013 10:43 pm 
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Joined: Sun Jul 18, 2010 8:02 pm
Posts: 86
Thanks - helpful so 90 UMS is low A*
Thanks for taking time


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PostPosted: Sat Oct 19, 2013 7:50 am 
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Joined: Fri Sep 15, 2006 8:51 am
Posts: 8117
Yep 90 is the A* threshold and is equivalent to 44 raw marks


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