Multivariate Tests of Asset Pricing: The Comparative Power of Alternative Statistics
This paper examines estimation issues associated with multivariate tests of asset pricing. Two issues are considered: (1) the constraint that the sample size ( N) must be less than the time series ( T), and (2) the relative effect on power of using the multivariate statistic versus a univariate counterpart. We find that an alternative statistic that allows for large N does not dominate the usual portfolio tests. More notably, we find that the power of a simple diagonal statistic usually dominates the multivariate statistic for cases considered in this study.
Volume (Year): 25 (1990)
Issue (Month): 02 (June)
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