Weighted Mean Calculator

Weighted mean calculator calculates the average of a set of values, where each value has their own weights.

Formula for Weighted Mean

The formula for weighted mean is
x = x₁w₁ + x₂w₂ + x₃w₃ +...+ x_nw_nw₁ + w₂ + w₃ +...+ w_n
while
x = value
w = different weight associated with the values

For example, if there is a set of the values 5,7,18, and their corresponding weights are: 4,9,23.
the weighted mean is calculated as
x = x₁w₁ + x₂w₂ + x₃w₃w₁ + w₂ + w₃
= 5 x 4 + 7 x 9 + 18 x 234 + 9 + 23
=13.81