> We looked at each country’s trajectory in “phase space” – where we looked at the evolution of the daily case growth rate as a function of the number of cases (rather than as a function of time). Each country has followed a very similar trajectory in this space, where the disease begins on a theoretical SIR curve but then veers off course and decelerates after government intervention.

This has also been done here: https://aatishb.com/covidtrends/

Accompanying minutephysics video: https://www.youtube.com/watch?v=54XLXg4fYsc

Previous discussion: https://news.ycombinator.com/item?id=22715920

This page provides results by country rather than by US state.