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Weighted average calculator

An average where some numbers count more than others.

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Separate the numbers with spaces, commas or new lines.

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Weighted average 83

How it works

Σ(x × w) ÷ Σw

Multiply each number by its weight, add those products up, then divide by the total of the weights. Weights can be percentages, credits, points or counts; only their sizes relative to each other matter. Put the weights in the same order as the numbers.

  1. Multiply each number by its weight and add them Σ(x × w) = 8,300
  2. Add up the weights Σw = 50, 30, 20 → 100
  3. Divide 8,300 ÷ 100 = 83

Good to know

  • Both lists need the same number of entries.

Printed from rocketcalc.io/math/weighted-average