Behavior of the Product-Moment Correlation Coefficient when Two Heterogeneous Subgroups Are Pooled.

Sockloff, Alan L.

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Peer reviewed

ERIC Number: EJ125066

Record Type: Journal

Publication Date: 1975

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Behavior of the Product-Moment Correlation Coefficient when Two Heterogeneous Subgroups Are Pooled

Sockloff, Alan L.

Educational and Psychological Measurement, 35, 2, 267-76, Sum 75

Major interest is the derivation of a mathematical formulation and a demonstration of the effects of pooling two subgroups on the total group correlation coefficient, and additionally, a procedure to guide the decision concerning the pooling of data for the purpose of calculating a single correlation coefficient. (Author/RC)

Descriptors: Correlation, Data Analysis, Heterogeneous Grouping, Mathematical Applications, Sampling, Statistical Analysis, Statistical Bias

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