Variance Estimation with Dependence and Heterogeneous Means
Fuente:
arXiv
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| Autore principale: | |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| Accesso online: | |
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| _version_ | 1866908881611915264 |
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| author | Yap, Luther |
| author_facet | Yap, Luther |
| contents | This paper considers the problem of estimating the variance of a sum of a triangular array of random vectors with heterogeneous means. When random vectors exhibit two-way cluster dependence or weak dependence, standard variance estimators designed under homogeneous means can underestimate the true variance, which results in subsequent tests being oversized. To restore validity, this paper proposes a simple conservative variance estimator robust to heterogeneous means and shows its asymptotic validity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_11497 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Variance Estimation with Dependence and Heterogeneous Means Yap, Luther Econometrics Methodology This paper considers the problem of estimating the variance of a sum of a triangular array of random vectors with heterogeneous means. When random vectors exhibit two-way cluster dependence or weak dependence, standard variance estimators designed under homogeneous means can underestimate the true variance, which results in subsequent tests being oversized. To restore validity, this paper proposes a simple conservative variance estimator robust to heterogeneous means and shows its asymptotic validity. |
| title | Variance Estimation with Dependence and Heterogeneous Means |
| topic | Econometrics Methodology |
| url | https://arxiv.org/abs/2603.11497 |