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Robustness of the Distribution Theory of the Propuct Moment Correlation Coefficient

Stanford University

Robustness of normal test theory for correlation coefficients is at least asymptotically ensured for bivariate distributions satisfying a linearity and a homoscedasticity condition for the null theory and a further kurtosis condition for the nonnull theory. If any one of these conditions fall, it may be demonstrated that robustness may fail as well. This result is applied to study of the point biserial, multiserial correlation coefficients, and the -coefficient.

Key Words: Product moment correlation coefficient • Point biserial • Multiserial coefficients • Coefficient • Robustness

Journal of Educational and Behavioral Statistics, Vol. 5, No. 2, 115-128 (1980)
DOI: 10.3102/10769986005002115


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