Cutting infection rate by half is not the same as protecting half the people from infection
Kaiser explains what 50% vaccine efficacy actually means, and it's not what you think.
Tests
A testing mess across the pond
Kaiser takes a glance at the A-Levels controversy in the U.K.
The shift to antibody testing is a choice of death over life
Kaiser looks at the ins and outs of antibody testing.
Why tests are not perfect
Kaiser explains why testing can't be perfect. Typically, the test itself can't be perfect; but also errors arise from outside the labs.
If you are using Facebook Ads split testing (A/B testing), stop fooling yourself
Kaiser Fung, founder of Principal Analytics Prep, and former director of Applied Analytics at Columbia University, explains why you can't run proper A/B tests on Facebook
Dispute over analysis of school quality and home prices shows social science is hard
Most of my friends with families fret over school quality when deciding