# Probability Distributions

> Compute probabilities, percentiles, and plot various probability distributions.

Canonical page: [https://chrome-stats.com/d/com.mbognar.probdist](https://chrome-stats.com/d/com.mbognar.probdist)

## Overview

- **ID:** `com.mbognar.probdist`
- **Platform:** Android
- **Type:** Android app
- **Status:** Removed
- **Publisher:** Matthew Bognar
- **Category:** EDUCATION
- **Downloads:** 709,782
- **Rating:** 4.83 / 5 (1,972 ratings)
- **Version:** 5.9.1
- **Last updated:** 2026-09-14
- **First published:** 2012-12-30
- **Publisher country:** US
- **Size:** 13 MB
- **Data as of:** 2026-09-20
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.mbognar.probdist)
- **Website:** [http://www.stat.uiowa.edu/~mbognar](http://www.stat.uiowa.edu/~mbognar)
- **Privacy policy:** [https://homepage.divms.uiowa.edu/~mbognar/privacy-probdist.html](https://homepage.divms.uiowa.edu/~mbognar/privacy-probdist.html)

## Description

The Probability Distributions Chrome extension enables users to compute probabilities, determine percentiles, and generate visual plots for a wide range of statistical distributions. It supports discrete distributions such as binomial, geometric, Poisson, hypergeometric, and negative binomial, providing probability mass functions and precise calculations. For continuous distributions including normal (Gaussian), t, chi-square, F, exponential, gamma, beta, and log-normal, the extension offers percentile computations and probability density function visualizations.

This tool is designed for users with existing knowledge of probability distributions, making it an efficient calculator and graphical aid for students, educators, statisticians, and data analysts working with probability models. Whether you need to analyze binomial probabilities or examine the shape of a gamma distribution, this extension provides a comprehensive and user-friendly interface for statistical probability tasks.

## Permissions and access

### Permissions

- `android.permission.INTERNET`
- `com.mbognar.probdist.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Review summary

Users frequently praise the app for being easy to use, accurate, and very useful for learning and research in probability distributions. It’s seen as a valuable educational asset and helpful for coursework and training. While a few users note occasional inaccurate results for specific distributions (e.g., Poisson) and request more theory content, there are no consistently reported major drawbacks.

### Pros

- Easy to use and user-friendly.
- Accurate results and reliable performance.
- Very useful for learning, coursework, and research in probability distributions.
- Valuable educational asset for probability distributions; supportive for teaching and training.

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.mbognar.probdist)