If you are including the exam grade, the following formula is used to calculate the semester average:
( ( (Cycle 1 + Cycle 2 + Cycle 3) / 3 x (Total Weight - Exam Weight) ) + (Exam Grade x Exam Weight) ) / Total Weight
If you are not including the exam grade, the following formula is used to calculate the semester average:
(Cycle 1 + Cycle 2 + Cycle 3) / 3