How is covid 19 currently growing
How is covid 19 currently growing
Some have (quite rightfully) commented on how you shouldn’t look at the R^2 of linear regressions on cumulative data since even if the changes from one day to the next are completely random, the totals they add up to wouldn’t be independent of each other. Since the derivative of an exponential should also be an exponential, we could instead run the same test on the logarithms of the differences from day to day, which in this case gives R^2 = 0.91.
While this video uses COVID-19 (what we’re all calling « Coronavirus ») as a motivating example, the main goal is simply a math lesson on exponentials and logistic curves. If you’re looking for a video more focused on COVID-19 itself, I’d recommend taking a look at this one from Osmosis: https://youtu.be/cFB_C2ieW5I
