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    Could someone explain clearly what a "Credit Weighted Average" of (say) 50% is?

    Consider that I take 6 modules over two semesters, and that I'm in my first year.


    Umm.... I'm not sure exactly what the situation is, some more detail would be helpful.

    We have a module system at my university... I can try to explain that, then explain our credit weighting. Yell at me if it's irrelevant I suspect it might be the same as yours though Hopefully it will help.

    Anyway... I'm meant to do 60 'credits' per semester, and this is made up of modules. Bigger modules have more credits assigned to them, indicating that they count for a larger amount of my work in the semester. I'm going to give modules silly names to make them easier to refer to. So, I might do a module in Tea, worth 30 credits. I'd do a module in Chocolate, worth 20 credits. Finally, a 10-credit module in Pasta.
    Say these each get marked out of 100. If I do really well in the Pasta module, ok in the Chocolate one, but less well in the Tea one, then because the Tea module counts for more, it should drag my overall grade down more than it would if I just took the average over all the modules.
    The way to do this is took consider each credit, rather than each module.
    Suppose I got the following:
    Credits__Module____mark out of 100

    To get my overall grade, I do:
    \frac{(30 \times 40) + (20 \times 70) + (10 \times 65)}{30 + 20 + 10}
    So I'm seeing what mark out of 100 I get for each credit, then adding all these, and taking the average per credit.
    So my overall mark would be about 54 out of 100, which reflects that I wasn't good at Tea, but was better at Chocolate and Pasta.

    I actually study Maths officially, but in my spare time I might as well study tea, chocolate and pasta... :rolleyes:
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