Uploaded February 2026 | Updated September 2026, 2 weeks ago

---

Demonstrating that you can filter data to smooth out the numbers, but whether it's weather data, stock market information or Taylor Swift, the math is the same! David Domminney Fowler takes us through it.

Find out more from Dave at youtube.com/c/DavidDomminneyFowler

Computerphile is supported by Jane Street. Learn more about them (and exciting career opportunities) at: jane-st.co/computerphile

This video was filmed and edited by Sean Riley.

Computerphile is a sister project to Brady Haran's Numberphile. More at bradyharanblog.com