regression toward the mean

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Noun1.regression toward the mean - the relation between selected values of x and observed values of y (from which the most probable value of y can be predicted for any value of x)
statistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters
statistical method, statistical procedure - a method of analyzing or representing statistical data; a procedure for calculating a statistic
regression analysis - the use of regression to make quantitative predictions of one variable from the values of another
linear regression, rectilinear regression - the relation between variables when the regression equation is linear: e.g., y = ax + b
curvilinear regression - the relation between variables when the regression equation is nonlinear (quadratic or higher order)
References in periodicals archive ?
Study limitations include potential lack of generalizability to clinical settings and reliance on self-reported sexual practices, according to the investigators; also, the results may have been influenced by treatment adherence, and the trend toward safer behaviors may have reflected regression toward the mean or greater loss to follow-up of participants having risk behaviors.
To control for regression toward the mean, we also included an untreated control group of 18 participants.
If the concept of regression toward the mean holds, would it be expected that the beta of XYZ will rise or fall?