A cautionary note on computing conditional from unconditional correlations
AbstractWe show that some care is needed when inferring true unconditional correlations from observed conditional correlations, which is a frequent problem in empirical finance and elsewhere. We give a general formula for the relationship between the two and demonstrate its importance in the context of the bivariate t-distribution.
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Bibliographic InfoArticle provided by Elsevier in its journal Economics Letters.
Volume (Year): 111 (2011)
Issue (Month): 2 (May)
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Web page: http://www.elsevier.com/locate/ecolet
Conditional correlation t-distribution Stock returns;
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