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# UMS to Raw! watch

1. How?
2. with a magic wond!
3. Lol! seriously!
4. If you got 77ums and

53raw = 70ums
61raw = 80ums

53 + [(77 - 70)/10]*(61 - 53) = 59

--

If your ums is above 80 then you have to know the minimum raw mark required for a ums of 100. I believe that this raw mark is usually

min{M, A + 2(A - B)}

where M is the maximum possible raw mark (75 for most Edexcel units), and A and B are the raw marks that give 80ums and 70ums respectively.
5. Thats VERY confusing!
Okay I got 94 UMS on C4, what's my RAW?

Cheers
6. I have to assume that you did Edexcel C4 because I don't have the boundaries for the other boards.

The examiners' report says:

45raw = 70ums
52raw = 80ums

The minimum raw mark needed for 100ums is therefore min{75, 52 + 2(52 - 45)} = 66. We interpolate between

52raw = 80ums
66raw = 100ums

to find that your raw mark is

52 + [(94 - 80)/20]*(66 - 52) = 62

http://www.edexcel.org.uk/VirtualCon...rt_June_05.pdf

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Updated: August 18, 2005
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