Jeffrey’s Amazing Statistics Program (JASP)

JASPThey say if something sounds too good to be true, it is. Maybe you’ve heard that there is no such thing as a free lunch. I would describe JASP as a rare exception to both of these rules. The following information was provided by the JASP Team (2017).

JASP is a free program (licensed under The GNU Affero General Public License, Version 3) capable of quickly and easily generating complex statistical analyses, suitable for publication. JASP is based in C++ and R programming languages. JASP is powerful, and able to run a variety of commonly used statistical analyses. For instance, the following includes both frequentist and Bayesian JASP capabilities: correlations, linear regressions, log-linear regressions, one sample T-Tests, independent samples T-Tests, paired samples T-Tests, ANOVA, repeated measures ANOVA, ANCOVA, binomial tests, and contingency tables (JASP Team, 2017). JASP also allows for frequentist exploratory factor analysis, principal component analysis, reliability analysis, structural equation modeling, and descriptive statistics, and can perform Bayesian summary statistics.  JASP is made possible by the European Research Council, the University of Amsterdam, the Association for Psychological Science, Utrecht University, and the Center for Open Science.

Encylopedia Brittanica, (n.d). Sir Harold Jeffreys.

At the same time, JASP is user-friendly and intuitive, with a “drag-and-drop” interface. During analysis, JASP provides a panel generating a real-time visualization of the results. Tables and charts with APA formatting can be saved or copy and pasted into a word processor document.

Fun fact: Another reason to love JASP is that the acronym literally stands for Jeffrey’s Amazing Statistics Program, (a nod to Sir Harold Jeffreys, a prolific astronomer, geophysicist, mathematician, and meteorologist) which makes it all the more charming in my opinion. JASP is available for Windows, MAC, and Linux. Download today at


JASP Team (2017). JASP (Version [Computer software]. Retrieved from

Jeffreys, Sir Harold. [Photo]. In Encyclopædia Britannica. Retrieved from