"Statistical Methods in Online A/B Testing" is a comprehensive guide to statistics in online controlled experiments, a.k.a. A/B tests, that tackles the difficul

Getting numbers is easy; getting numbers you can trust is hard. This practical guide by experimentation leaders at Google, LinkedIn, and Microsoft will teach yo

How Your Business Can Use the Science That Helped Win the White House The average conversion rate—the rate at which visitors convert into customers—across t

Testing is a surefire way to dramatically improve your website’s conversion rate and increase revenue. When you run experiments with changes to design or cont

The A/B Testing mindset at a company evolves through four stages. Intuition: In the beginning, intuition drives decisions. The company acknowledges the user, bu