# Allen Downey

> Allen Downey is a professor emeritus at Olin College, Principal Data Scientist at PyMC Labs, and the author of Think Python, Think Bayes, Think Stats and other books on computer science and data science. All of his books are available under free licenses from Green Tea Press.

## Books

- [You Would Choose Now](https://www.allendowney.com/ywcn): Measuring America's progress toward fairness and tolerance with decades of national survey data; early access edition on Leanpub
- [Probably Overthinking It](https://greenteapress.com/wp/probably-overthinking-it/): Data science topics for a general audience (University of Chicago Press)
- [Think Python, 3rd edition](https://allendowney.github.io/ThinkPython/): Introduction to programming in Python, free online as Jupyter notebooks
- [Think Stats, 3rd edition](https://allendowney.github.io/ThinkStats/): Exploratory data analysis in Python, free online as Jupyter notebooks
- [Think Bayes, 2nd edition](https://allendowney.github.io/ThinkBayes2/): Bayesian statistics in Python, free online as Jupyter notebooks
- [Green Tea Press](https://greenteapress.com/): All of the books, free to read and download

## Writing

- [Probably Overthinking It (blog)](https://www.allendowney.com/blog/): Essays on data science, statistics, probability and social trends
- [Home page](https://www.allendowney.com/wp/): Biography, books, and contact information

## Optional

- [Portfolio](https://allendowney.github.io/Portfolio/): Professional activities, talks and courses
- [Generating Pseudo-random Floating-Point Values](https://www.allendowney.com/research/rand/): An unpublished 2007 paper and C code, cited in Python's `random` module documentation