A factor can be applied to each individual material that can give a material relatively higher or lower weight in the calculation of the grading category grade. This value defaults to 1.00 for all materials, so if it is not changed, all materials in your course will carry the same weight.
The factor for any graded item (assignments, tests/quizzes, discussions) multiplies the weight of the max pt value by the number input in the factor field. For example:
If Test A has a Max pts value of 10 and a Factor of 1.0,
and Test B has a Max pts value of 1 and a Factor of 10.0,
then Test B is weighted 10x more than Test A such that a perfect score on each item is essentially worth the same.
That is, if the student scores zero on one assignment and the max points for the other assignment, the calculated total percentage would be 50% for the two tests.
Similarly, if Assignment A has a Max pts value of 10 and a Factor of 1.0,
and Assignment B has a Max pts value of 10 and a Factor of 2.0,
then Assignment B is weighted 2x more than Assignment A.
If the student receives a zero on Assignment A and the max points for Assignment B, the calculated total average would be 67%. However, if the student receives the max points for Assignment A and a zero for Assignment B, the calculated total average would be 33%, because Assignment B is worth 2x Assignment A.
If factor is set to 0, that material is not used in calculating the category grade.
Where do I find the Factor feature?
The ability to add factors is located in the Grading options area of graded items (assignments, tests/quizzes, discussions). You'll see this option when creating an assignment, test/quiz, or discussion. For existing graded items, you can add factors by clicking on the gear to the right of the item, and selecting the option to Edit.
If you mark an item as Mid-term/Final, it is not possible to apply a factor to that item.
Understanding How Factor is Calculated
The way in which factor is applied to the calculation of your students' grade depends on whether you have you grading category calculated by Total Points or Percentage. Check how your Grading Category is calculated by clicking Gradebook on the left side of your course and then clicking Grade Set Up. Click on the name of the category and note whether it is Calculated By: Percentage or Total Points.
Factor in Percentage-Based Grading Categories
The percentage score for all materials in the category are averaged to come out with a percentage score for the category.
Example Data for one student:
|Material Title||Possible Points||Points Scored||Factor||% Score|
The different factors determine the relative weight each material has compared with the other materials in the category.
The category percentage score calculation = (sum of [the product of each materials % score * that material's factor])/sum of all factors
= (66.7*1 +85.7*1.5 + 88*0 +93.8*2)/4.5
Factor in Total Points-Based Grading Categories
In a grading category calculated by total points, the possible points for all materials in a category are divided by the total points score and multiplied by 100 to give a total percentage grade.
Using the same set of data, consider how the calculation differs when you choose Total Points for your category in which you have course materials with factor applied:
|Material Title||Possible Points||Points Scored||Factor||%Score|
The category percentage score calculation = (The sum of [the product of the number of points received*that material's factor]) / (The sum of [the product of the number if possible points*that material's factor)} * 100
= ((30*1 + 60*1.5 +22*0 + 75*2)/(45*1 + 70*1.5 + 25*0 + 80*2))*100