Published April 6, 2021 | Version Submitted
Discussion Paper Open

Counterexamples to the classical Central Limit Theorem for triplewise independent random variables having a common arbitrary margin

Abstract

We construct explicitly two sequences of triplewise independent random variables having a common but arbitrary marginal distribution F (satisfying very mild conditions) for which a Central Limit Theorem (CLT) does not hold. We obtain, in closed form, the asymptotic distributions of the sample means of those sequences, which are seen to depend on the specific choice of F. This allows us to illustrate the extent of the `failure' of the classical CLT under triplewise independence. Our methodology is simple and can also be used to create, for any integer K, new K-tuplewise independent but dependent sequences (which are useful to assess the ability of independence tests to detect complex dependence). For K≥4, it appears that the sequences thus created do verify a CLT, and we explain heuristically why this is the case.

Additional Information

G. B. B. acknowledges financial support from UNSW Sydney under a University International Postgraduate Award, from UNSW Business School under a supplementary scholarship, and from the FRQNT (B2). F. O. is supported by a postdoctoral fellowship from the NSERC (PDF) and the FRQNT (B3X supplement). This research includes computations using the computational cluster Katana supported by Research Technology Services at UNSW Sydney.

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Additional details

Identifiers

Eprint ID
108707
Resolver ID
CaltechAUTHORS:20210413-073459048

Related works

Funding

University of New South Wales
Fonds de recherche du Québec – Nature et technologies (FRQNT)
Natural Sciences and Engineering Research Council of Canada (NSERC)

Dates

Created
2021-04-13
Created from EPrint's datestamp field
Updated
2023-06-02
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