About Stat Mania

What Stat Mania is, who makes it, and everything you can find on the site: lecture slides, a blog, an interactive R course, data tools, quizzes, games and utilities.
Statistics · Mathematics · Data Science

About Stat Mania

A free place to learn statistics by reading, watching, playing and experimenting

What is Stat Mania?

Stat Mania is a free learning site for statistics, mathematics and data science. It started as a collection of lecture slides for college students and has grown into a small ecosystem: slides, a blog, an interactive R course, data tools, quizzes, and a growing arcade of games that sneak real probability and number sense into play.

Everything runs in your browser. There is nothing to install, no account to create and nothing to pay for.

The guiding idea is simple: statistics sticks when you can poke at it. So wherever possible, a concept comes with something to click, drag, simulate or play.

Who makes it?

Stat Mania is written and maintained by Abdullah Al Mahmud, a lecturer in statistics at Mymensingh Girls' Cadet College, Bangladesh. Earlier he taught at Sylhet Cadet College and Pabna Cadet College, worked as a research assistant, and wrote science articles for a national daily. Writing as Abdullah Adil Mahmud, he has also published six popular-science books in Bangla.

The slides, questions and tools are built with open tools: R, Python, Quarto, LaTeX, plain HTML and JavaScript. That is why most of it can be rebuilt from text files and why it stays fast and free.

What's on the site

A tour of every section. Click any card to jump in.

Lecture Slides

About two dozen slide decks covering probability, random variables, central tendency, dispersion, key distributions, correlation and regression, sampling, time series and more.

Open Slides

Blog (English)

Fifty-odd posts on statistics, time series with R code, C for R and Python users, Linux and Git tips, and research workflow.

Read the Blog

Blog (Bangla)

A companion blog in Bangla for readers who prefer to learn statistics in their own language.

Read in Bangla

Courses

An interactive R Programming course: variables, vectors, control flow, functions, data frames and plotting. Every code block is live and editable, run in your browser with WebR, so there is nothing to install. Python and SQL courses are planned.

Start Learning

Utility Tools

Everyday helpers: BMI calculator, age calculator, alarm clock with named alarms and snooze, strong password generator, and a timer / countdown with fullscreen support.

Open Tools

Games

Fifteen quick games, from math drills and word puzzles to arcade reflex games. Several come with a score, a personal top 10, sound effects and an Achievement Index that shows how close you got to a perfect round.

Play Games

Quizzes

A Statistics & Probability quiz with math rendering, and a General Knowledge quiz for a break from numbers.

Take a Quiz

Data Visualization

Make charts without code: bar charts, histograms, pie charts and scatter plots, a statistical data generator, a correlation visualizer, and the Aesthetic Equations gallery of beautiful mathematical curves.

Make a Chart

Analysis Tools

A Central Limit Theorem visualizer, a distribution calculator and distribution visualizer, a CSV data analysis tool that gives a quick overview of your file, and a text-mining tool.

Explore Analysis

R Package Dashboard

A dashboard of R package statistics, built with Quarto and R.

Open Dashboard

Code Snippets

Short, reusable snippets for the shell, R and Python that save a trip to the search engine.

Browse Snippets

Resources

Hand-picked external links (GIS, maps and more) plus on-site downloads such as a list of probability distributions with their PMF / PDF formulas.

See Resources

The games, at a glance

Each one is a few minutes long and runs on any device.

Good to know

It is free and needs no sign-up. The site uses basic analytics (Google Analytics with IP anonymization) to see which pages are useful. Some games save your scores and settings, such as top 10 lists and the mute choice, in your own browser only.

Found a mistake or have an idea? Corrections and suggestions are welcome. You can reach the author through the links on the blog's About page.

Ready to Dive In?

Pick a starting point

Lecture Slides Play Games Read the Blog