RWE's Online Analytics Test



I have been invited to take RWE’s online analytics test as my application for the Supply and Trading Graduate Scheme.

I would like to ask anyone who has taken the test the following questions.

How was the test? What does it consist of? Is it case-study based or calculation based or another format?

I have been searching online and on Google etc about this test but I can’t find anything. Any help would be much appreciated.