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Combined Mean of Two Groups Calculator

Pooled mean from two group means and sample sizes.

Compute the combined (weighted) mean of two groups given each group's mean and sample size: x̄ = (n₁·x̄₁ + n₂·x̄₂) / (n₁ + n₂).

Daniel Oh By Daniel Oh
Published Last reviewed 1 min read

Inputs

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

x̄ = (n₁ · x̄₁ + n₂ · x̄₂) / (n₁ + n₂)

In depth

Compute the combined (weighted) mean of two groups given each group's mean and sample size: x̄ = (n₁·x̄₁ + n₂·x̄₂) / (n₁ + n₂).