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Educational and Psychological…1
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Alexander, Ralph A.1
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Correcting Doubly Truncated Correlations: An Improved Approximation for Correcting the Bivariate Normal Correlation when Truncation has Occurred on Both Variables.
Peer reviewed Peer reviewed
Alexander, Ralph A.; And Others – Educational and Psychological Measurement, 1987
This article presents an improved approximation formula for the problem of correcting correlation coefficients that arise from range-restricted distributions on either or both the independent and dependent variable. (BS)
Descriptors: Correlation, Estimation (Mathematics), Mathematical Formulas, Sampling