How to Calculate Weighted Average in 3 Steps with Example 1. One advantage of using the weighted average method is consistency. Suppose you scored 30 in assignments that account for 10 of your final grade and you then scored 80 in your final exam that accounts for 70 of your final grade.
Weighted Avg 10 5 20 10 30 15 40 20 0005.
Suppose you scored 30 in assignments that account for 10 of your final grade and you then scored 80 in your final exam that accounts for 70 of your final grade. Using the weighted average formula we get Weighted Avg w 1 x 1 w 2 x 2 w 3 x 3 w 4 x 4. Calculating Weighted Average When the Weights Add up to 1 1. It is also applicable to short-term samples such as a 15-minute TWA.