What's wrong with this data?
Kaiser Fung (Numbersense) invites readers to help decide whether the data are fake, using a Yelp account as an example.
numbers rule your world
Exercising fails to stop obesity, doh
Kaiser Fung (Numbersense, Principal Analytics Prep) reacts to an article claiming more gym memberships have not reduced obesity rate.
A puzzle, and a cause for concern
Kaiser Fung, founder of Principal Analytics Prep and author of Numbersense, reports on a disturbing encounter with Google News.
Dead man tells no tales but dead statistician had the story down
Kaiser Fung, author of Numbersense and founder of Principal Analytics Prep, explains the preliminary finding about the death of a Tesla driver, and warns about drawing the wrong conclusions due to a biased sample.
Moviepass reminds me of Groupon
Kaiser Fung, founder of Principal Analytics Prep, explores the business model behind Moviepass, the popular but money-losing movie subscription company. Counterfactual thinking, and understanding consumer behavior are key parts of the analysis.
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