Eta-Squared
Calculate Eta-Squared instantly with the exact formula and a worked example.
Eta-Squared
SS between groups
SS total
Number of groups k
Total sample size N
η²
0.14
Share of variance explained
14%
ω² (unbiased estimate)
0.1082
F statistic
4.64
Cohen f
0.403
Effect size
Large
More about: Eta-Squared
What it calculates
The “Eta-Squared” calculator computes η² from 4 parameters: ss between groups, ss total, number of groups k, total sample size n.
A core calculation for studying, engineering tasks, and checking solutions.
Example calculation
With parameters SS between groups = 14, SS total = 100, Number of groups k = 3, Total sample size N = 60 the result is 0.14 (Cohen's thresholds: 0.01 small, 0.06 medium, 0.14 large).
How to use
- Enter ss between groups, ss total, number of groups k and total sample size n — each field above is adjustable with a slider.
- η² is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
Related calculators
FAQ
How is Eta-Squared calculated?
The Eta-Squared calculator computes η² from ss between groups, ss total, number of groups k, total sample size n. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Eta-Squared calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
More calculators in this category
Explore related free tools