Study different probability distributions, perform hypothesis tests and construct confidence intervals for means and proportions!

Probability distributions

The Probability application allows you to calculate probabilities from a continuous or discrete probability distribution.

Interactive visuals

Enter the parameters for your distribution and you're ready to compute a probabilty! Simply input either a value or a probability and the other field updates automatically!

Perform a significance test

In the Tests section, you can perform significance tests for proportions, means and slopes as well as a Chi-square test.

With the four-step interactive wizard, you simply select the type of test, define your hypothesis, input your data and view your results!

Construct a confidence interval

Confidence intervals are constructed in a similar fashion with easy to read results and great visualizations!


Calculate probability using a normal distribution

Learn how to work with a normal distribution in the probability application.

Construct a confidence interval using one sample

Learn how to construct a one-sample z-interval for a proportion.

Perform a hypothesis test using two samples

Learn how to perform a hypothesis test using two samples with a two-sample t-test for the difference of means.

Learn more about the Inference application by visiting the user manual.