If weighted grades in the grade book does not equal 100%, what happens? What would the final percentages be for each student?
This has been covered in great detail here: Extra credit using weighted assignment groups.
Note that even if there isn't any extra credit involved, that page is a good resource.
The short version is that the grade is calculated as follows:
That step 3 is the crucial part to understanding the process.
Note that I keep saying things like categories with submitted assignments. That is calculated on a student-by-student basis.
Finally, Canvas does not recognize phrases like "extra credit". If you have a category called "extra credit" but you don't yet have submitted assignments in categories so that the weight is at least 100%, then it's not extra credit. In the first bullet point example about the 85%, if a faculty had a gradebook where the weights added to 80% and then had a 5% extra credit category, there would be no extra credit at all, the 5% would be part of the regular grade. While you cannot have an extra credit assignment group with weights less than 100%, you can add extra credit to individual assignments.
More in-depth explanations and example calculations can be found in the link I provided at the top.
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