MATH / DESCRIPTIVE STATISTICS

Combined Mean of Three Groups Calculator

Combine three group means using group sizes. Review the equation, substituted values, result, assumptions, and interpretation in one guided workspace.

01 Calculated in this tab
02 Values stay in this browser tab
03 Use boundary

Use boundary

Calculation path

Combine three group means using group sizes. The page evaluates the displayed equation from your supplied values and presents both symbolic and substituted KaTeX working so the arithmetic can be checked.

Calculation path

m=(n1m1+n2m2+n3m3)/(n1+n2+n3)

What you provide

First group size, using the same scenario as the other inputs
First group mean, using the same scenario as the other inputs
Second group size, using the same scenario as the other inputs
Second group mean, using the same scenario as the other inputs
Third group size, using the same scenario as the other inputs
Third group mean, using the same scenario as the other inputs

What you receive

Combined mean from the stated equation
A symbolic formula plus substituted working with your values
Visible assumptions, field guidance, and an authoritative learning reference

Use boundary

Choose the maximum decimal places shown. This does not increase source accuracy.

Use one consistent dataset or geometric scale and verify assumptions before interpreting rounded results.

Use internally consistent units and retain extra precision when carrying the result into another calculation.

Reviewed reference factors

OpenStax College Algebra 2e

Combined Mean of Three Groups Calculator

Calculation path

What you provide

What you receive

Choose the maximum decimal places shown. This does not increase source accuracy.

Reviewed reference factors

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