Does anyone know the average marks for each of the modules? i.e. does students on average score higher in Analysis III or Algebra II etc. I know it'll be helpful to know when choosing modules, and I'm sure there is a range of averages between modules - I'm pretty sure the average mark in Vectors and Matricies was higher than the average in Geometry and Motion for example.

No idea if that information is available. Personally I wouldn't see the attraction in knowing really (other than out of curiosity). Surely different people will be able to well on different things and the idea is to do modules you're interested in, right?

But on the other hand, I DO want to be able to pass my degree, (It's pretty hard, you know). And between you and me, if there is a module that only a very small number are passing, I think that would mean it'd be more likely I'd find it hard and do poorly, which could make it hard for me to graduate. Surely in this sort of case, it is worth knowing?