statistics

The Dunning-Kruger effect is widely misquoted. The 1999 Cornell study found something real but narrower than the famous 'peak of Mount Stupid' curve suggests.

Florence Nightingale's life, statistical innovations, and verified quirks: the polar area diagram, pet owl Athena, 50 years bedridden, and rewriting hospital medicine from her bedroom.

Statistics working data scientists use: descriptive summaries, distributions, hypothesis tests, regression, causal inference, plus worked A/B numbers.

A/B testing statistics explained: hypotheses, sample size, p-values, power, confidence intervals, and the seven mistakes that invalidate experiments.

Bayesian reasoning is how you should update your beliefs when new evidence arrives. It's the mathematical foundation of scientific inference — and a framework that anyone can use to think more clearly about uncertainty.

Are the dead outnumbered by the living? How do 8 billion people today compare to all of human history? Demographers have actually calculated this — and the answer reveals surprising truths about our species.