# regression to the mean

Definition from Wiktionary, the free dictionary

## English[edit]

### Noun[edit]

**regression to the mean** (*plural* **regressions to the mean**)

- (statistics) The phenomenon by which extreme examples from any set of data are likely to be followed by examples which are less extreme; a tendency towards the average of any sample. For example, the offspring of two very tall individuals tend to be tall, but closer to the average (mean) than either of their parents.