Correlation and causation
Does giving compliments improve team performance?
Decision-making
Doping pops up in the news
The world of anti-doping has interesting statistics
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.
Know your data 38: the script of the data leak theater
Kaiser ventures into the data leak theater.
A paradox of big data
Kaiser tries the new subway card.
Combining probabilities
Kaiser explains how probabilities are aggregated.