The 3rd in a series of tutorials on using Python for introductory
statistical analysis, this tutorial covers methods for **describing** data via
simple statistical calculations and statistical graphics. As always, the
notebook for this tutorial is available here.

In the 1880s, Sir Francis Galton, one of the pioneers of statistics, collected data on the heights of approximately 900 adult children and their parents in London. Galton was interested in studying the relationship between a full-grown child’s height and his or her mother’s and father’s height. In order to do so, Galton collected height measurements from about 200 ...