Statistics You Can See, Touch, and Understand
An interactive course covering Stats 1, 2, and 3 — from descriptive statistics all the way to multiple regression.
How this works
Every section is built from the ground up to help you actually learn — not just memorize.
Interactive Playgrounds
Don’t just read about the Central Limit Theorem. Watch it happen.
AI Tutor
Stuck? Ask your AI tutor for help, right on the page.
Practice Quizzes
Test yourself with instant feedback after every section.
Real Data
Learn with datasets you actually care about.
What you'll learn
Three courses, 33 sections, from the basics through advanced modeling.
Stats 1
Foundations
- 1.1What Is Statistics?
- 1.2Types of Data
- 1.3Describing Data
- 1.4Visualizing Data
- 1.5Z-Scores & The Normal Distribution
- 1.6Probability Basics
- 1.7Sampling Distributions
- 1.8Central Limit Theorem
- 1.9Confidence Intervals
- 1.10Hypothesis Testing Logic
- 1.11One-Sample & Paired t-Tests
- 1.12Independent Samples t-Test
- 1.13Effect Size & Power
Stats 2
Comparing Groups & Relationships
Stats 3
Advanced Modeling
About the Instructor
Hi, I'm Hakan Karsilar. I built this site because I believe statistics doesn't have to be intimidating. With the right visualizations and hands-on practice, anyone can develop real intuition for how data works.
Every section is designed to help you build understanding from the ground up — no hand-waving, no “just trust the formula.” You'll see the concepts in action, work through real examples, and test yourself along the way.