Extra credit assignments are identified by assigning them a negative weight. The weight should be given as a fraction of the category grade. For example, if an assignment can raise the category grade by at most 2%, then enter the weight as ‘-0.02’.
For example, assume a score of 45 out of 50 was given for an extra credit assignment with a weight of -0.02 and assume the category grade was computed to be 83%. Then the final category grade would be:
83% + 100% * 0.02 * (45 / 50) = 84.8%
Extra credit assignments are accumulative. The method of computing grades only applies to the calculation of the category grade before adding extra credit assignments.
