Calculate a weighted average from the entered school grades or numbers and their weights.
Weighted Average allows you to calculate average of values with different weights. The greater is the weight of a value, the greater the impact it will have on the final average.
To calculate a weighted average, add together each number multiplied by its weight. Then divide the obtained result by the sum of all weights.
Calculate the weighted average for the numbers: 3, 2, 4 with weights: 5, 4, 1.
Weighted average:
(3 * 5 + 2 * 4 + 4 * 1) / (5 + 4 + 1)
= (15 + 8 + 4) / 10
= 27 / 10
= 2.7