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arXiv 1111.2038q-fin.STphysics.data-an
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墨西哥金融市场指数日价格波动分布的标度

On the scaling of the distribution of daily price fluctuations in Mexican financial market index

Lester Alfonso, Ricardo Mansilla, Cesar A. Terrero-Escalante

摘要:

本文对墨西哥股票市场指数IPC的对数收益率波动进行了统计分析。分析了涵盖$04/09/2000-04/09/2010$期间的每日数据样本,并拟合到不同的分布。进行拟合优度检验,以定量评估估计质量。特别注意的是样本的大小对分布尾部的估计衰减的影响。在这项研究中,得到了强有力的正态性拒绝。另一方面,在5%的显著性水平下,不能拒绝对数波动拟合$α$稳定Lévy分布的零假设。

英文摘要:

In this paper, a statistical analysis of log-return fluctuations of the IPC, the Mexican Stock Market Index is presented. A sample of daily data covering the period from $04/09/2000-04/09/2010$ was analyzed, and fitted to different distributions. Tests of the goodness of fit were performed in order to quantitatively asses the quality of the estimation. Special attention was paid to the impact of the size of the sample on the estimated decay of the distributions tail. In this study a forceful rejection of normality was obtained. On the other hand, the null hypothesis that the log-fluctuations are fitted to a $α$-stable Lévy distribution cannot be rejected at 5% significance level.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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