The formula for calculating Eta Squared is:
η2=SSeffectSStotal
Where:
Eta Squared is a statistical measure used in the context of an analysis of variance (ANOVA), which indicates the proportion of the total variance in a dependent variable that can be attributed to the variations in an independent variable. It is a measure of effect size and is used to determine the strength of the relationship between variables. The value of Eta Squared ranges from 0 to 1, where 0 indicates no effect and 1 indicates a perfect effect.
Let's assume the following values:
Using the formula to calculate Eta Squared:
η2=50200=0.25
The Eta Squared is 0.25.