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.
Statistics
The radial is still broken
Kaiser puzzles out yet another radial chart.
Adjust, and adjust some more
Kaiser looks at an interactive chart in the Financial Times.
Combining probabilities
Kaiser explains how probabilities are aggregated.
Excess delay
Kaiser finds a chart that analyzes London's congestion charging programme.
What's a histogram?
Kaiser introduces his talk about histograms.