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arXiv 0907.5448math.STmath.PRstat.COstat.TH
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二元正态模型公共相关统计量间渐近相对效率的单调性

Monotonicity properties of the asymptotic relative efficiency between common correlation statistics in the bivariate normal model

Raymond Molzon, Iosif Pinelis

摘要:

Pearson是最常见的相关统计量,主要用于参数设置。最常见的非参数相关统计是斯皮尔曼和肯德尔的。我们表明,对于二元正态i.i.d.样本这三个统计量之间的成对渐近相对效率单调依赖于总体相关系数。这种单调性是一个更强结果的推论。证明依赖于使用医院型规则的单调性模式。

英文摘要:

Pearson's is the most common correlation statistic, used mainly in parametric settings. Most common among nonparametric correlation statistics are Spearman's and Kendall's. We show that for bivariate normal i.i.d. samples the pairwise asymptotic relative efficiency between these three statistics depends monotonically on the population correlation coefficient. This monotonicity is a corollary to a stronger result. The proofs rely on the use of l'Hospital-type rules for monotonicity patterns.

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