Probability-Distributions icon

Probability-Distributions

Matthew Bognar
Free
4.9 out of 5

About Probability-Distributions

Compute probabilities, determine percentiles, and plot the probability density function for the normal (Gaussian), t, chi-square, F, exponential, gamma, beta, log-normal, Pareto, and Weibull distributions.

Compute probabilities, approximate percentiles, and plot the probability mass function for the binomial, geometric, hypergeometric, Poisson, and negative binomial distributions.

Probability-Distributions Screenshots

User Reviews

Flor93.
★★★☆☆ 3
Good for education but needs improvement
As a teacher I need exam mode such as Geogebra to use during exams
Uh, your Mom.
★★★★★ 5
Finally! A simple, free N(0, 1) calculator.
Subject line says it all. P(Z<x) for normal and a bunch more for essential statistical tests. THANK YOU!!!!
Juniorlaggers
★★★★★ 5
Sick App
I love probability distributions.
Matt-Jim
★★★★★ 5
iPhone SE (2020) issue has been fixed
Works perfectly now. Much better than using tables.
Jared Gellner
★★★★★ 5
BOGNAR IS THE GOAT
Goat status: 100%
Some College Student from WA
★★★★★ 5
Does advanced functions for free!
This could be really useful for students in college stats courses who are on a budget and can’t afford to buy a $100+ dollar graphing calculator. It does basic advanced functions like binomial pdf - for free. I don’t know if it does invNorm or Z-Test calculations ( possibly not) but for a calculation app that you don’t have to pay for this is pretty great and was just what I was looking for.
MaverickPig
★★★★★ 5
Nice
Easy my learning
Kiersten D
★★★★★ 5
So handy
I had Bognar as a professor multiple times in college and his app always came in handy. Whether on homework or studying for actuary exams, it’s always nice to have an app that can quickly compute values, in addition to showing graphs that help visualize data.
slamduncn
★★★★★ 5
Solid app
My professor created this for his students and I must say Professor Bognar is the juice cuz this works very well.
starstarset
★★★★★ 5
really useful app
Love this app! Web app on hypothesis testing and confidence interval is even more useful, especially the version where raw data can be the input!!