How to use this site

What runs where

Everything runs in your browser. The apps use Shinylive and the lab exercises use webR through quarto-live. Both are R compiled to WebAssembly, so there is no server, no account, and nothing to install.

• The first app or code cell on a page takes a few seconds to start while R downloads (around 20–30 MB, cached afterwards). Later ones are quick.
• Use a recent Chrome, Edge, Firefox or Safari. A laptop works best; the apps are usable but cramped on a phone.
• Nothing you type is saved. Reloading a page resets it. Copy anything you want to keep into your own R session.

Tips for self-study

• Predict before you click. Before moving a slider, say what you think will happen. Being surprised is where the learning happens.
• Do the “Try this” lists. They’re chosen to reveal the one idea each app exists for.
• Attempt each exercise before opening the hint, and the hint before the solution.
• Take the code home. Every lab snippet runs unchanged in RStudio or Positron.

Sources

The topics, examples and structure follow the lecture notes Regression basics, Maximum likelihood and The bootstrap by Lukáš Lafférs (Matej Bel University, Department of Mathematics). The explanations, apps and exercises here were written to accompany them. Recommended further reading from those notes:

• Faraway, J. (2016). Extending the Linear Model with R, and Linear Models with R.
• Hansen, B. Probability and Statistics for Economists and Econometrics (free online).
• Angrist, J. and Pischke, J.-S. (2008). Mostly Harmless Econometrics.
• Efron, B. and Tibshirani, R. An Introduction to the Bootstrap.
• Greenland, S. et al. (2016). Statistical tests, P values, confidence intervals, and power: a guide to misinterpretations. European Journal of Epidemiology 31(4).