sum of squares

What are Sums of Squares?

January 9th, 2021 by

A key part of the output in any linear model is the ANOVA table. It has many names in different software procedures, but every regression or ANOVAStage 2 model has a table with Sums of Squares, degrees of freedom, mean squares, and F tests. Many of us were trained to skip over this table, but


Member Training: The Anatomy of an ANOVA Table

December 31st, 2019 by

Our analysis of linear regression focuses on parameter estimates, z-scores, p-values and confidence levels. Rarely in regression do we see a discussion of the estimates and F statistics given in the ANOVA table above the coefficients and p-values.

And yet, they tell you a lot about your model and your data. Understanding the parts of the table and what they tell you is important for anyone running any regression or ANOVA model.