Labs
Short interactive visualizations you can poke at. Drag something, watch what moves, and build the intuition.
General
Distribution Explorer
Drag the parameters and watch the shape, mean, and spread respond. Sweep the plot to read off the probability of landing at or below a point.
- 3 distributions
- PDF & CDF
- Live P(X ≤ x)
Law of Large Numbers
Flip a coin thousands of times and watch the running proportion get reeled in. Chance doesn't correct itself — it gets outvoted by volume.
- 3 processes
- Live simulation
- ±2·sd/√n funnel
Linear Regression Playground
Drag the points and watch the best-fit line chase them. See what least squares actually minimises — and what one stray point does to R²
- Drag the data
- Live R² & residuals
- Add or remove points
Want the lessons behind them? The Open Library is free to read.