expression, noun
regression toward the mean; regression to the mean
A statistical phenomenon where extreme observations tend to be followed by more moderate ones. Used in technical contexts.
平均への回帰は、統計学の基本的な概念の一つです。
Regression toward the mean is one of the fundamental concepts in statistics.
A calque of the English statistical term 'regression toward the mean', composed of 平均 (mean) + への (toward) + 回帰 (regression).