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Probability Distributions v5.9

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About this app

Developer Description

Compute probabilities, percentiles, and plot various probability distributions.

Compute probabilities and plot the probability mass function for the binomial, geometric, Poisson, hypergeometric, and negative binomial distributions. Compute probabilities, determine percentiles, and plot the probability density function for the normal (Gaussian), t, chi-square, F, exponential, gamma, beta, and log-normal distributions.

Some knowledge of probability distributions is required! If you don't know what a "binomial" distribution is, for example, this application will not be useful to you.

What's New

Enabled landscape mode. Small UI changes. Improved rendering of Formulas. Updated SDK to version 36.

Version Information

Version
5.9
Downloads
500K+
Updated on
Jul 9, 2025
Released
Dec 30, 2012
Requires
Android 9

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Probability Distributions users say on Google Play

★★★★★
A Google user A Google user

OUTSTANDING app. Both useful and informative. Clean interface takes you to where you need to go immediately. Besides performing the distribution calculations, the app provides formulas and other relevant information about each distribution succinctly. Thank you for providing this app free of charge and without any ads.

81 Nov 20, 2018
★★★★
A Google user A Google user

Works, does the thing I needed it to do. Every time I use the hypergeometric and click on the screen it clears x. I would be more than happy to rate 5 stars if it wasn't for this little problem.

28 Dec 29, 2019
★★★
A Google user A Google user

What I was hoping was available was access to creating a file of data observations or vector of data observations to be loaded into the selected distributions that would display the statistical moments and the shape of the distribution.

5 Sep 22, 2018
A Google user A Google user

Bad app

1 Oct 7, 2019

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