
One-Tailed Vs. Two-Tailed Tests | Towards Data Science
Introduction If you’ve ever analyzed data using built-in t-test functions, such as those in R or SciPy, here’s a question for you: have you ever adjusted the default setting for the alternative hypothesis? If your answer is no—or if you’re not even sure what this means—then this blog post is for you! The alternative hypothesis parameter, commonly referred to as “one-tailed” versus “two-tailed” in statistics, defines the expected direction of the difference between control and