Abstract
Consider the problem of estimating the intra-class correlation coefficient of a symmetric normal distribution. In a recent article (Pal and Lim (1999)) it has been shown that the three popular estimators, namely—the maximum likelihood estimator (MLE), the method of moments estimator (MME) and the unique minimum variance unbiased estimator (UMVUE), are second order admissible under the squared error loss function. In this paper we study the performance of the above mentioned estimators in terms of Pitman Nearness Criterion (PNC) as well as Stochastic Domination Criterion (SDC). We then apply the aforementioned estimators to two real life data sets with moderate to large sample sizes, and bootstrap bias as well as mean squared errors are computed to compare the estimators. In terms of overall performance the MME seems most appealing among the three estimators considered here and this is the main contribution of our paper.
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Formerly University of Southewestern Louisisna
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Pal, N., Lim, W.K. On intra-class correlation coefficient estimation. Statistical Papers 45, 369–392 (2004). https://doi.org/10.1007/BF02777578
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DOI: https://doi.org/10.1007/BF02777578
Key words
- symmetric normal distribution
- second order admissibility
- Pitman Nearness Criterion
- Stochastic Domination Criterion