Sample Size and the Accuracy of Predictions Made from Multiple Regression Equations.

Sawyer, Richard

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Peer reviewed

ERIC Number: EJ269280

Record Type: Journal

Publication Date: 1982

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Sample Size and the Accuracy of Predictions Made from Multiple Regression Equations.

Sawyer, Richard

Journal of Educational Statistics, v7 n2 p91-104 Sum 1982

Rules are given for estimating accuracy of predictions based on a multiple regression equation. Formulas for moments of distribution and other parameters are noted. The approximate inflation in mean absolute error due to estimating the regression coefficients is a function of the base sample size and number of predictors. (DWH)

Descriptors: Colleges, Estimation (Mathematics), Multiple Regression Analysis, Predictive Validity, Predictor Variables, Regression (Statistics), Reliability, Statistical Bias, Statistical Studies

Publication Type: Journal Articles; Reports - Research; Guides - Non-Classroom

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Language: English

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