Correlation and causation
Does giving compliments improve team performance?
kaiser fung
Tidying up the details
Fixing up little details on a data graphic pays dividends
Doping pops up in the news
The world of anti-doping has interesting statistics
Using disaggregation in dataviz
Disaggregating data can be very useful when making charts
The most dangerous day
The most dangerous day in one's life
How would we know if Google engineers really improved traffic flow at intersections
It's not easy to measure the real-world impact of optimizations.