*Visualizing Linear Models* (Springer, 2021) - This short textbook introduces the theory of linear models, emphasizing two important and complementary ways of visualizing the concepts: the *observations* picture and the *variables* picture. Accompanying *flash cards* help reinforce the material.

- all exercises: anki | printable document | printable cards
- red + blue only: anki | printable document | printable cards
- errata

*Visualizing Random Variables* - This will be a follow-up to *Visualizing Linear Models* that encourages the student to extend the two-pictures idea to random vectors more generally by understanding \(L^2\) spaces using intuition from Euclidean space.

*Data Analysis with R: The Big Picture* - A gentle and systematic introduction for complete beginners. (Unfinished.)

*A Systematic Guide to Mathematical Statistics* - This is a long-term project, but early drafts of some sections are posted below.