The change in a variable per unit time divided by the value of the variable prior to the change. Example: rising from 10 to 20 the rate of change is (20-10)/10=10/10=a rate of change of 1.

RATE OF CHANGE: "The rate of change in the variable was 1."

Cite this page: N., Pam M.S., "RATE OF CHANGE," in

*PsychologyDictionary.org*, April 28, 2013, https://psychologydictionary.org/rate-of-change/ (accessed February 19, 2020).