regression

Noun B1 – Intermediate

A return to an earlier, usually worse or less developed, state, or in statistics, a method for analyzing the relationship between variables.

"After the stressful move, the toddler showed signs of regression, like wanting a bottle again."

In statistics, "regression analysis" is a method for predicting one variable based on its relationship to others, a distinct technical sense.

Synonyms

relapse decline

progression advancement