This article shows how a running total differs from a rate of change, using...

https://penelopesnewchat.yousher.com/how-do-i-label-axes-so-totals-and-rates-do-not-get-mixed-up

This article shows how a running total differs from a rate of change, using parcels as an example. See how units like parcels and parcels per hour, plus the time window you choose, help you read a shipping chart and avoid mixing a total with a pace.