You're Smarter
Than You Think
Introduction to Statistics · Community College Edition
A complete, neurodivergent-friendly Introduction to Statistics textbook, built around the learning outcomes shared by community college statistics courses, and free for every student anywhere in the world. It comes with four free step-by-step Technology Companions (R, jamovi, StatCrunch, TI-84), and no paid subscriptions are ever required.
You're Smarter
Than You Think: Statistics
Safaa Dabagh
For Neurodivergent Learners
2026 · CC BY 4.0
Designed Differently, On Purpose
Most statistics textbooks open with definitions and formulas. This one assumes you're human. Every section starts with a story, a real-life moment that is the statistical idea, before we ever name it, and every chapter opens by warming up the exact arithmetic you'll need.
Story First
Every section begins with a real-world moment. Concepts arrive through context, not jargon.
Consistent 6-Step Rhythm
Read This First → Let's Talk → Now We Name It → Watch It Work → Your Turn → Check Your Voice. Your brain always knows what's coming.
Math Skills Warm-Up
Each chapter opens with the exact arithmetic it needs, refreshed, with practice, so a fraction never derails a big idea.
Free Technology Companions
Four free step-by-step guides (R, jamovi, StatCrunch, TI-84) do every chapter's work in whatever tool your class uses. No paid subscriptions, ever.
Check Your Voice
Every section includes a moment to notice, and talk back to, the inner critic.
Room to Work
Printable work space follows every practice set, solve right on the page.
Answer Keys & Formula Sheets
Every problem has a worked solution, and each Part closes with a one-page formula sheet.
Outcome-Aligned
Organized around the Student Learning Outcomes shared by community college statistics courses, describe, estimate, test.
What's Inside
Six Parts, thirteen chapters, six Part checkpoints, six formula sheets, a cumulative final-exam prep, and graphs throughout.
What's the Story in the Data?
Statistics, data, variables, population vs. sample
Where Did This Data Come From?
Sampling, bias, observational vs. experiment, confounding
Show Me a Picture
Bar charts, histograms, shape, center & spread at a glance
The Typical & The Spread
Mean, median, standard deviation, z-scores & boxplots
Describing Data, Study Guide & Formula Sheet
Mixed practice across Chapters 1 to 4 with full answers
What Are the Chances?
Probability rules, conditional probability, two-way tables
Predictable Randomness
Distributions, the binomial, and the normal bell curve
From Sample to Truth
Sampling distributions & the Central Limit Theorem
How Sure Are We?
Confidence intervals for a mean, proportion & variation
Testing What We Believe
Hypothesis testing for one parameter (p-value approach)
Comparing Two Groups
Two-sample & paired tests; two proportions
When Three or More Groups Disagree
One-way ANOVA & post-hoc (Tukey) tests
Counts, Categories & Surprises
Chi-square: goodness-of-fit, independence & homogeneity
Drawing the Line
Simple linear regression & correlation, with inference
Cumulative Practice & A Final Note
Choose-the-right-tool review across all 13 chapters
Technology Companions
Four free companion booklets take the book's work into whatever software your class uses. Each one is keyed chapter by chapter to the main book, written in the same friendly voice, and every example ships with a ready-made dataset so you can follow along. Pick the tool your course uses, or try them all.
R & RStudio
Real, runnable code for all 13 chapters, with the output explained plainly and a one-page cheat sheet.
Download PDFjamovi
Point-and-click, free, no coding. The book's default tool, walked through screen by screen.
Download PDFStatCrunch
Every analysis by its exact Stat and Graph menu path, for courses that use StatCrunch.
Download PDFTI-84
Keystroke by keystroke on the graphing calculator, from 1-Var Stats to LinRegTTest.
Download PDFThe datasets, all nine. Every example's data as plain CSV files that open in R, jamovi, StatCrunch, Excel, and Google Sheets. One set of data, every tool. Download the dataset bundle (ZIP).
License & Usage
This textbook is free, and it stays free. Licensed under Creative Commons CC BY 4.0. Download it, print it, share it with your students, and adapt it for your course, just credit the original author.
Download & Print
Print as many copies as you need for your students. No fees, no restrictions.
Share Freely
Post the PDF link, email it to colleagues, share it across departments.
Adapt for Your Course
Remix sections, swap in your own class data, translate it, with attribution.
How to Cite This Book
The book and its four Technology Companions are archived on Zenodo with a permanent DOI: 10.5281/zenodo.21254374.
Dabagh, S. (2026). You're Smarter Than You Think: Statistics (1st ed.). Zenodo. https://doi.org/10.5281/zenodo.21254374
For Instructors
Interested in adopting this textbook?
If you teach Introduction to Statistics at a community college and would like to use this book, I'd love to connect. It is software-agnostic (jamovi by default), uses generic data you can swap for your own class data, and is organized around the standard statistics learning outcomes, so it drops into most intro courses regardless of term length.
Ready to download?
It's free. It always will be. No sign-up, no email required.
Download Free PDF (255 pages)Safaa Dabagh · For Neurodivergent Learners · 2026 · CC BY 4.0