Chang Shuhua, Li Deli, Qi Yongcheng, Rosalsky Andrew
1Coordinated Innovation Center for Computable Modeling in Management Science, Tianjin University of Finance and Economics, Tianjin, China.
2Department of Mathematical Sciences, Lakehead University, Thunder Bay, Canada.
J Inequal Appl. 2018;2018(1):54. doi: 10.1186/s13660-018-1645-7. Epub 2018 Mar 6.
Let be an observable random variable with unknown distribution function [Formula: see text], [Formula: see text], and let [Formula: see text] We call the power of moments of the random variable . Let [Formula: see text] be a random sample of size drawn from [Formula: see text]. In this paper we propose the following simple point estimator of and investigate its asymptotic properties: [Formula: see text] where [Formula: see text], [Formula: see text]. In particular, we show that [Formula: see text] This means that, under very reasonable conditions on [Formula: see text], [Formula: see text] is actually a consistent estimator of .
设 为一个具有未知分布函数 [公式:见正文],[公式:见正文] 的可观测随机变量,且设 [公式:见正文] 我们称 为该随机变量的矩幂。设 [公式:见正文] 是从 [公式:见正文] 中抽取的大小为 的随机样本。在本文中,我们提出以下关于 的简单点估计量并研究其渐近性质:[公式:见正文] 其中 [公式:见正文],[公式:见正文]。特别地,我们证明 [公式:见正文] 这意味着,在关于 [公式:见正文] 的非常合理的条件下,[公式:见正文] 实际上是 的一个一致估计量。