used more than 60 million times!

Below you will find a complete set of details for 2 different references / citations that are related to the computation of the t-statistic and degrees of freedom for a Student t-test.

Reference for Citing the Online Calculator

- Soper, D.S. (2024). t-Statistic and Degrees of Freedom Calculator [Software]. Available from https://www.danielsoper.com/statcalc

Reference from the Scientific Literature

- Keller, G. (2011). Statistics for Management and Economics (9th edition). Mason, OH: South-Western Cengage.

Related Resources