# What is the difference between $t$-statistic and test-statistic?

I read several posts on Cross Validated about $t$-statistic and $p$-value and I believe I understand that. But I don't understand what is test-statistic and how is it different from $t$-statistic.

• Is the first common letter "t" confusing you? Jan 4 '16 at 16:59

$t$-statistic is related to $t$-test (in case of testing regression parameters it is Wald test), while test statistic is a general term for some statistical test. $t$-statistic is a test statistic, but there are also other test statistics besides $t$-statistic.