Calculator for a two-sample pooled-variance t-test: Two-Sample t-Test Calculator (Pooled-Variance) This web calculator conducts a pooled-variance t-test for a difference between two populations' means ...

In this article, we will explore some of the theory behind the one sample t test, assumptions of the test, interpretation and a worked example.

Many authors of statistical textbooks have been uncritical of the data in their examples of the paired-samples t-test. Careful criticism requires consideration of the following topics: outliers, ...