Resources Master the key principles of statistics with GraphPad's hugely popular educational guides and resources. 125+ Expert-Led Videos Advance your skills and get more from your …

Create publication-quality graphs and analyze your scientific data with t-tests, ANOVA, linear and nonlinear regression, survival analysis and more.

By clicking "Get Started" I agree to GraphPad's Terms and Conditions and Privacy Policy.

Gain access to our online training center designed to help you master the fundamentals of Prism and key statistical concepts: t tests, ANOVA, linear regression; how to use Prism and much more!

Perpetual Customers Contact us at help.graphpad.com to learn about upgrade options.

All prices in US dollars. To qualify for academic pricing, your group must be a degree-granting institution or nonprofit registered charity and use Prism exclusively for academic research. For …

Explore the Knowledgebase Statistics Guide A concise guide to doing statistical analyses with GraphPad Prism.

You're currently browsing the Prism User Guide. We also have two other guides focused on Statistical Analysis and Curve Fitting! Both of these guides do more than just explain how to …

Since 1989, GraphPad Software has been dedicated to creating software exclusively for the international scientific community. Created by scientists for scientists, our intuitive programs …

Confidence interval of a sum, difference, quotient or product of two means. Confidence interval of a standard deviation. Linear regression. Analyze, graph and present your scientific work easily …