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two-tailed

British

adjective

statistics (of a significance test) concerned with the hypothesis that an observed value of a sampling statistic differs significantly from a given value, where an error in either direction is relevant: for instance, in testing the fairness of scales, an inspector will seek to exclude both overweight and underweight goods Compare one-tailed

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A test of two variances may be left-tailed, right-tailed, or two-tailed.

From Textbooks • Mar. 27, 2020

This tells us that this is a two-tailed test: if the machine is malfunctioning it will be shutdown regardless if it is from over-filling or under-filling.

From Textbooks • Nov. 29, 2017

Is this a one-tailed test or two-tailed test?

From Textbooks • Nov. 29, 2017

The following examples illustrate a left-, right-, and two-tailed test.

From Textbooks • Sep. 19, 2013

Posterior wings two-tailed; exterior tail very short, interior lengthened; anal angle two-lobed, margin whitish.

From Zoological Illustrations, Volume III or Original Figures and Descriptions of New, Rare, or Interesting Animals by Swainson, William

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023