Bar chart Excel is the graveyard of charts, no! Kaiser Fung, creator of Junk Charts blog and founder of Principal Analytics Prep, encourages Excel users to work harder at making nice data graphics.
Algorithms 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
Axis Another simple Excel chart needs help Kaiser Fung, founder of Principal Analytics Prep and Junk Charts, takes apart an Elon Musk chart, created using some Excel defaults.
Axis Making people jump over hoops Kaiser Fung, founder of Principal Analytics Prep and Junk Charts, comments on a WSJ chart about how banks pay their brokers
Big Data Counting is hard, especially when you don't have theories Exploring the data about movies, uncovering data issues
Algorithms Pre-processing data is not just about correcting errors Exploration of IMDB rating data, by Kaiser Fung, founder of Principal Analytics Prep