How do I use weighted mean of grades with "Natural" aggregation and extra credit?
You will learn how to use weighted mean of grades aggregation with the "Natural" or default aggregation method within the gradebook in your course, and include an extra credit grade item.
1. View your syllabus grade structure.
Note the extra credit item at the bottom.
2. Click on Grades.
3. The Grader report will display.
The Grader report page displays as the default entry point into the gradebook for instructors. The Grader report page is similar to a spreadsheet showing all of the student names and the Grade items for your course. Students will only see the User report page which shows only their own grades.
There are several functions you can perform within the Grader report page. You can enter student grades in existing grade items, you can view the student grades at a glance, and you can easily navigate to other pages within the Grade administration module.
4. Click on Setup to expand that section.
5. Click on Categories and items.
6. The Categories and items page displays.
The Categories and items page is where you add and organize Grade items and Categories (folders of Grade items). You can also create custom calculations and choose various methods of aggregating grade items.
7. Here is the Categories and items page with the Grade items added.
The Natural aggregation method is the default for TITANium. This means that the grade items are summed up to reach the course total. However, we can also use the Natural aggregation method to create a weighted mean of grades aggregation.
8. Note the Weights column.
9. Tick the check box and type the desired weight.
Now, repeat that action with the rest of the grade items.
10. When finished, click on Save changes.
11. Click on Add grade item.
Now, to create the extra credit grade item, click on Add grade item.
12. Type a title for the new grade item.
13. Type a Maximum grade value.
14. Click on Save changes
15. Click on Edit for the new grade item.
Now, to mark the new grade item as extra credit, click on Edit.
16. Click on Edit settings.
17. Tick the Extra credit check box.
18. Click on Save changes.
19. The grade item is now marked as extra credit.
The + symbol with dots under it represents extra credit grade items or categories. A category can also be marked as extra credit. Note that the Course total is now back to 650 points.
The extra credit grade item is worth 25 points; however, according to the syllabus it needs to be worth +5%. If it stays at 25 points without being weighted, it can only add a maximum of 3.85%. So, to make it worth 5%, we need to weight the extra credit grade item as along with the other grade items in this course.
20. Tick the Weight column check box and type 5 into the text field.
21. Click on Save changes.
22. Click on User report.
23. Choose a student from the drop down menu.
24. The User report displays the student's view of the gradebook.
Looking at the Calculated weight column, we see the same weights that were created in the Categories and items page. The extra credit grade item can contribute up to 5%, so if a student has a 100% on all of the assignments, he/she could obtain a score of 105% or 675 points.
You have now learned how to use the Natural (default) aggregation method to create weighted mean of grades aggregation with an extra credit grade item included.