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Title: Gaussian rank correlation and regression

Author(s): Dante Amengual, Enrique Sentana and Zhanyuan Tian

Publication Date: June 2020

Keyword(s): Copula, Growth regressions, migration, Misspecification, Momentum, robustness and Short-term reversals

Programme Area(s): Financial Economics

Abstract: We study the statistical properties of Pearson correlation coefficients of Gaussian ranks, and Gaussian rank regressions -- OLS applied to those ranks. We show that these procedures are fully efficient when the true copula is Gaussian and the margins are non-parametrically estimated, and remain consistent for their population analogues otherwise. We compare them to Spearman and Pearson correlations and their regression counterparts theoretically and in extensive Monte Carlo simulations. Empirical applications to migration and growth across US states, the augmented Solow growth model, and momentum and reversal effects in individual stock returns confirm that Gaussian rank procedures are insensitive to outliers.

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Bibliographic Reference

Amengual, D, Sentana, E and Tian, Z. 2020. 'Gaussian rank correlation and regression'. London, Centre for Economic Policy Research. https://cepr.org/active/publications/discussion_papers/dp.php?dpno=14914