Welcome!
This web site offers free resources for students and researchers working with statistics in the social sciences. All the calculators and tools featured here have been designed with ease of use and clarity of presentation in mind. Certainly, you should find them much less cumbersome — and definitely less expensive! — than SPSS and the like.
🧙♂️ Not sure which test to use?
Let our wizard guide you to the right statistical test in 30 seconds.
Statistical Tests
Hypothesis testing, ANOVA, t-tests, and more.
P-Value Calculators
Derive p-values from Z, t, chi-square and Pearson r.
Descriptive Statistics
Averages, variance, standard deviation, and charts.
Why Should You Trust These Tools?
The output of the calculators and tools featured on this web site has been audited for accuracy against the output produced by a number of established statistics packages, including SPSS and Minitab, so you can be confident that you're not being led astray by using our resources.