One-tailed test

From WikiMD's Food, Medicine & Wellness Encyclopedia

Wikipedia

A statistical test where a difference between two groups, if true, is expected to be in one direction. For example, the difference between passive smokers and non-smokers in the occurrence of lung cancer is expected to be in one direction. It is not expected that smoking will protect from lung cancer, and so there is no need to test for it. A one-tailed test will need a smaller sample size than a two-tailed test.

One-tailed test Resources
Doctor showing form.jpg
Wiki.png

Navigation: Wellness - Encyclopedia - Health topics - Disease Index‏‎ - Drugs - World Directory - Gray's Anatomy - Keto diet - Recipes

Search WikiMD


Ad.Tired of being Overweight? Try W8MD's physician weight loss program.
Semaglutide (Ozempic / Wegovy and Tirzepatide (Mounjaro) available.
Advertise on WikiMD

WikiMD is not a substitute for professional medical advice. See full disclaimer.

Credits:Most images are courtesy of Wikimedia commons, and templates Wikipedia, licensed under CC BY SA or similar.


Contributors: Prab R. Tumpati, MD