Answered By: Brian Yeich
Last Updated: Aug 24, 2015     Views: 56

There are two methods that can be used for weighting assignments in the Moodle Grade Book. If you assign a certain number of points for each assignment that totals to 100, then you will want to use Simple Weighted Mean. If you grade each assignment out of 100 and want to apply a weight to each assignment, you will want to use Weighted Mean of Grades. 

Weight Category Totals Using Simple Weighted Mean of Grades Aggregation

To set a category total to a course weighting use Simple Weighted Mean of Grades as the aggregation for the category. This aggregation method opens the category total for editing to set it at the appropriate weighted value. The item earned percentages will be averaged and applied to the category total. The course level aggregation is usually set to SUM of Grades. The course total will be the sum of the category values, and while it traditionally equals 100 (%) it is not required to do so.

Using Simple Weighted Mean of Grades at each category is a common alternative to using Weighted Mean of Grades at the course level.

  1. Start on the site home page.
  2. In the Administration block > Course Administration heading, click the Grades link.
  3. Click the  Categories and Items tab.
  4. Select Simple Weighted Mean of Grades aggregation at all category levels.
    • Optional: Set the course level aggregation to SUM of Grades.
  5. Enter values in the Max Grade column for each category.
  6. Save the changes.
  7. Confirm that the course total Max Grade is correct.

To use Weighted Mean of Grades you must create categories, add the assignments to the appropriate category and weight each category to total 100%.

Weight Categories Using Weighted Mean of Grades Aggregation

To weight all categories choose the Weighted Mean of Grades aggregation at the course level. Each category will add a text box for entering the value of the weight for that category.

Using Weighted Mean of Grades at the course level works well when the category aggregation is SUM of Grades. Then the percentage of the earned category sum divided by the maximum total is the percentage applied to the category weight value. You will have to manually set the course total when Weighted Mean of Grades is a course level aggregation. Traditionally the sum of all categories weights should equal 100%.

  1. Start on the site home page.
  2. In the Administration block > Course Administration heading, click the Grades link.
  3. Click the  Categories and Items tab.
  4. Select Weighted Mean of Grades as the course level aggregation.
    • Optional: Set all category level aggregation to SUM of Grades.
  5. Enter values in the Weight column for each category, so that their total adds up to 100(%).
  6. Confirm or change the Max Grade (column) Course Total (row) is 100.
  7. Click Save changes.

Related Topics