Robust and alternative estimators for "better" estimates for expenditures and other "long tail" distributions

ASIA unversity > 管理學院 > 休閒與遊憩管理學系 > 期刊論文 > Item 310904400/8606

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题名:	Robust and alternative estimators for "better" estimates for expenditures and other "long tail" distributions
作者:	Huan, TC (Huan, Tzung-Cheng);Beaman, J (Beaman, Jay);Chang, LH (Chang, Liang-Han);Hsu, SY (Hsu, Shih-Yun)
贡献者:	Department of Leisure and Recreation Management
关键词:	robust;estimation;long-tail distribution;unbiased;reduced variability
日期:	2008-08
上传时间:	2010-03-26 03:18:12 (UTC+0)
出版者:	Asia University
摘要:	A 2006 Tourism Management article proposes using specific robust estimators to determine "better" estimated means for long-tail distributions; that is for skewed distributions with valid large responses heavily influencing the mean. Getting better estimates matters because long-tail distributions occur frequently for amounts and quantities. In addition, long-tail distribution sample means and totals can be so variable using those prompts concerns. However, low variability robust estimates of means and totals can be badly biased. Therefore, a focus of this paper is obtaining relatively low variability estimates that are not "too" biased. Real data are used to illustrate attributes of long-tail distributions. Results show some robust estimators suggested for producing better estimates are badly biased and therefore not better. Three ways of obtaining lower variability estimated means and totals that are not "too" biased are discussed. Practical and research implications of the ideas presented and of results obtained are discussed. (c) 2007 Elsevier Ltd. All rights reserved.
關聯:	TOURISM MANAGEMENT, 29 (4): 795-806
显示于类别:	[休閒與遊憩管理學系] 期刊論文

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