One of the many concerning features of the coronavirus is this: Its spread is “exponential.” Here’s what that means and why it matters.

From a statistical perspective, relationships among variables may take a broad array of forms. Sometimes, two variables may be unrelated to one another, such as (presumably) the scores on some college ...

It’s time for us all to understand the Exponential Function. One of the hallmarks of COVID-19 is its exponential nature, with numbers of infected currently doubling about every 4 days in the US ...