![The Importance of Statistical Power in Online A/B Testing Statistical Power and Test Sensitivity](https://blog.analytics-toolkit.com/wp-content/uploads/2016/10/2016-10-24-Statistical-Power-and-Test-Sensitivity-352x198.jpg)
What is Statistical Power? In null-hypothesis statistical testing (NHST) – the procedure most commonly applied in A/B tests, there are two types of errors that practitioners should care about, type I and type II errors. Type I is the probability of the test procedure to falsely reject a true null hypothesis. Type II error is […] Read more…