t-test

American  

[tee-test] / ˈtiˌtɛst /

Or t test

noun

Statistics.

1. a test for determining whether or not the mean of an observed sample differs significantly from the mean of another sample or of a hypothetical normal population.

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Etymology

Origin of t-test

First recorded in 1930–35; see origin at Student's t distribution ( def. )

Example Sentences

The finding about reduced authoritarianism barely met the threshold of significance –– and with a one-tailed t-test.

From Scientific American • Nov. 5, 2020

Note that if the sample size is sufficiently large, a t-test will work even if the population is not approximately normally distributed.

From Textbooks • Mar. 27, 2020

A two-sample t-test was performed to a significance level of P < 0.05.

From Nature • Sep. 19, 2017

A hundred years later, when researchers such as Lenhart study online behaviour, the t-test offers guidance on how many people to survey for representative knowledge about the entire population.

From The Guardian • Apr. 18, 2016

You conduct an independent-samples t-test with sample size ten in each of two groups.

From Textbooks • Sep. 19, 2013