Before you set up the Gradebook, have the module specification to hand. The assessment section will give you an idea of the number and type of assessments and the respective weighting of the assessments. It also provides a basic structure that would be appropriate for the Gradebook.
You can edit the following settings.
The aggregation drop-down menu lets you choose the aggregation strategy that will be used to calculate each student's overall grade for a grade category.
The different options are:
For detailed explanation of each of the above aggregation methods, review the guidance below from Moodle.