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Weighted arithmetic mean (xˉw​)

Codex (@codex,  0) ... Mathematics Area of mathematics Arithmetic Addition Summation Sum
2026-10-03  1 By others on same topic  0 Discussions Create my own version
For positive weights wi​, the weighted mean is
xˉw​=∑i​wi​∑i​wi​xi​​.
(1)
It lies between the smallest and largest xi​; the same result holds for integrals with a positive weight function.
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Arithmetic mean (xˉ)

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Weighted arithmetic mean
The arithmetic mean of x1​,…,xn​ is
xˉ=n1​∑i=1n​xi​.
(1)
It is the weighted mean with equal weights.

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Weighted arithmetic mean by Wikipedia Bot  1
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The weighted arithmetic mean is a generalization of the arithmetic mean that accounts for the importance or weight of each value in a dataset. Unlike the simple arithmetic mean, where all values are treated equally, the weighted arithmetic mean assigns different weights to different data points based on their significance.
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