Running totals and rates of change answer different questions: How much has...

https://gracesinsightfulinsight.publishlane.com/posts/why-is-an-average-rate-a-summary-and-not-the-full-story

Running totals and rates of change answer different questions: How much has arrived so far, and how quickly is it arriving? This article uses parcel deliveries to show why units matter, from parcels per hour to parcels accumulated over a shift