Proportion Of Variance Accounted For Calculator

Introduction & Importance

The proportion of variance accounted for, also known as effect size, is a crucial metric in statistics that measures the strength of a relationship between variables. It’s vital for understanding the practical significance of your findings…

How to Use This Calculator

1. Enter the sum of squares (SS) and degrees of freedom (df) for your data.
2. Click ‘Calculate’.
3. View the results and chart below.

Formula & Methodology

The formula for calculating the proportion of variance accounted for is:

SS / (SS + SS_error)

Where SS is the sum of squares for the effect, and SS_error is the sum of squares for the error…

For more information, see the Statistics How To guide.

Interactive FAQ

What is a good proportion of variance accounted for?

Generally, a value of 0.02 is considered small, 0.15 is medium, and 0.35 is large…