t-test

or t test

[ tee-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.

Word History and Origins

Origin of t-test¹

First recorded in 1930–35; 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

P = 0.015 and P = 0.002, two-sided Student’s t-test.

From Nature

P values based on a one-sided t-test are shown. b, The average ATAC-seq enrichment for each stage is shown at the promoters of stage specific genes at the same stage identified by mRNA-seq.

From Nature

Statistical analysis was performed using a two-tailed t-test; data are mean ± s.e.m.

From Nature

Also listed are the log-fold enrichment and depletion scores of each shRNA and false-discovery rates as assigned using an Emperical-bayes moderated t-test.

From Nature