Key Points A t-statistic is performed during a t-test. The resulting statistic is used to determine whether to accept or reject a null hypothesis. The core use of this statistic is for direct ...

What is a one sample t test? The t test is a commonly used hypothesis test in statistics that allows us to compare the mean value of a group of sampled data with some hypothesized value, usually a ...

(Statistical software can handle unequal variances for the two-sample t-test module, but the actual calculations are complex and beyond the scope of this article).

Learn what a t-test is and discover the five standard assumptions made regarding the validity of sampling and data used in a t-test.

The Annals of Statistics and The Annals of Probability (which supersede The Annals of Mathematical Statistics), Statistical Science, and The Annals of Applied Probability are the scientific journals ...

Student's t statistic is frequently used in practice to test hypotheses about means. Today, in fields such as genomics, tens of thousands of t-tests are implemented simultaneously, one for each ...