# What is a t-score?

A* t*-score (a.k.a. a *t*-value) is equivalent to the number of standard deviations away from the mean of the *t*-distribution.

The *t*-score is the test statistic used in *t*-tests and regression tests. It can also be used to describe how far from the mean an observation is when the data follow a *t*-distribution.