Appendix D: Guide to the Companion Resources
The full text of Margin of Error is freely available online at stats.marginoferrormedia.com, where it is hosted alongside everything in this appendix. The companion site is the book — searchable, with figures rendered crisp on a screen, and updated whenever errata or new exercises are merged. The print and Kindle editions are produced from the same source.
Interactive Applications
A set of free, browser-based Shiny apps lets you explore the ideas in the book hands-on. They run in any modern browser, with no account or installation required, and each one is referenced from a “Try It Online” callout in the chapter that introduces the underlying idea. The complete list, organized by chapter, lives at stats.marginoferrormedia.com/apps.html.
| App | Chapters |
|---|---|
| Variable Type Explorer | 1 |
| Sampling Explorer | 2, 7 |
| Total Survey Error Explorer | 2 |
| Datasaurus Explorer | 3, 4 |
| Correlation Game | 4 |
| Probability Rules Sandbox | 5 |
| Base Rate Lab | 5 |
| Binomial Explorer | 5 |
| Normal Curve Explorer | 6 |
| Distribution Explorer (Sampling Distributions / CLT) | 6 |
| Confidence Interval Simulator | 7 |
| Hypothesis Testing Playground | 8 |
| P-Hacking Simulator | 8 |
| ANOVA Visualizer | 9 |
| Regression Explorer | 10, 11 |
Datasets
All twelve datasets used in the book are available for download as CSV files. The download page is at stats.marginoferrormedia.com/datasets.html; see Appendix B for complete variable descriptions, sources, and notes on construction.
Errata and Feedback
If you find an error, have a suggestion, or want to flag something that could be explained better, open an issue at github.com/patilv/margin-of-error-feedback or email the author at patilv@gmail.com.
Instructor Resources
In development. Resources will include a solutions manual covering all three exercise tiers across the chapters with exercises, sample 15-week and 8-week syllabi, and exam templates for midterm (Chapters 1–8) and final (Chapters 1–12). Contact patilv@gmail.com for the current state and access.