variants or less commonly two-tail
: being a statistical test for which the critical region consists of all values of the test statistic greater than a given value plus the values less than another given value compare one-tailed

Word History

First Known Use

1945, in the meaning defined above

Time Traveler
The first known use of two-tailed was in 1945

Dictionary Entries Near two-tailed

Cite this Entry

“Two-tailed.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/two-tailed. Accessed 1 Mar. 2024.

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