Multiply each value by its weight
Add all the weighted values together
Add all the weights together
Divide the total weighted values by the total weights
Weighted average = (Σ value × weight) ÷ (Σ weight)
Multiply each value by its weight
Add all the weighted values together
Add all the weights together
Divide the total weighted values by the total weights
Weighted average = (Σ value × weight) ÷ (Σ weight)