Grade Aggregation question: if using weighted mean, does every graded item need to be in a category? What if I have some items in a category that is weighted and a couple of items not in a category but having individual weights? For exam, a final exam is standing by itself (no category) and worth 30% of the total grade. It is in the same gradebook as categories for homework (worth 20%), projects (worth 30%) and another non-category item presentation (worth 20%). Can one mix the use of whether to use categories or not within a gradebook?