Weighted average is a calculation that takes into account the varying degrees of importance of the numbers in a data set.
One advantage of using the weighted average method is consistency.
Formula to calculate weighted average method.
![Calculate Weighted Average.](https://www.learntocalculate.com/wp-content/uploads/2020/09/weigted-average.png)
Example:
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. Calculate your weighted average of your grade.
![Calculate Weighted Average.](https://www.learntocalculate.com/wp-content/uploads/2020/09/weigted-average-2.png)
Thus, your weighted average is 29.5.