Matthew Conlen provides a short explainer of how kernel density estimation works. Nifty.
Kernel density estimation explainer
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Who Still Smokes?
Two decades out from the first statewide ban on smoking in enclosed workplaces, here’s who still smokes.
The Most Gender-Switched Names in US History
We use some names mostly for boys and some mostly for girls, but then there is a small percentage that, over time, switched from one gender to another. Which names made the biggest switch?
Most Uniquely Popular Job in Each State
These are the jobs in each state that are most specific to the place.