Statistics
Open statistics textbooks, z-score tables, formula sheets, and probability and log-transformation references for students in introductory methods courses.
Open textbooks, lookup tables, and short explainers for the statistics that come up in introductory methods courses. Use the textbooks to review a concept, the tables and formula sheets while working problems, and the explainer when interpreting a regression with logged variables.
Textbooks and primers
- Introductory Statistics — LibreTexts collection of open introductory statistics textbooks for students across many fields.
- A Primer in Probability — PDF · Archived: Probability primer from UNC.
Tables and formula sheets
- Z Score Table Open Textbook — Table of critical values of z from a Taft College open textbook on elementary statistics.
- Z Score Table PDF — PDF version of the z-score table, for printing or use offline.
- Formula Sheet from University of Michigan — Formula sheet for the University of Michigan’s STATS 250 introductory statistics course.
- Combinations and Permutations — Math Is Fun explainer on the difference between combinations and permutations and how to count each.
Interpreting results
- Interpreting Log Transformations in a Linear Model — University of Virginia Library article on reading coefficients when variables are log-transformed.