: a statistical test involving confidence limits for the random variable t of a t distribution and used especially in testing hypotheses about means of normal distributions when the standard deviations are unknown

Examples of t-test in a Sentence

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However, a t-test revealed a statistically significant decrease in the Super Regional host win percentage when comparing pre-NIL to NIL era results with a p-value of 0.088. Giovanni Malloy, Forbes.com, 6 June 2025

Word History

First Known Use

1932, in the meaning defined above

Time Traveler
The first known use of t-test was in 1932

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Cite this Entry

“T-test.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/t-test. Accessed 17 Jun. 2025.

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