RANDOMIZATION TESTS OF COPULA SYMMETRY

Brendan Beare and Juwon Seo

Econometric Theory, 2020, vol. 36, issue 6, 1025-1063

Abstract: New nonparametric tests of copula exchangeability and radial symmetry are proposed. The novel aspect of the tests is a resampling procedure that exploits group invariance conditions associated with the relevant symmetry hypothesis. They may be viewed as feasible versions of randomization tests of symmetry, the latter being inapplicable due to the unobservability of marginals. Our tests are simple to compute, control size asymptotically, consistently detect arbitrary forms of asymmetry, and do not require the specification of a tuning parameter. Simulations indicate excellent small sample properties compared with existing procedures involving the multiplier bootstrap.

Date: 2020
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Working Paper: Randomization tests of copula symmetry (2019)
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