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

An unpaired two-tailed Student’s t-test was used to calculate the P values, except where specified otherwise.

From Nature • Mar. 21, 2017

Gosset’s invention, the t-test, gave Guinness the lead in scientific food production and changed statistics forever.

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