| 权数对CPI的结果影响程度定量分析 |
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| 引用本文： | 张伟,;朱孔来. 权数对CPI的结果影响程度定量分析[J]. 统计与信息论坛, 2014, 0(6): 25-29 |
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| 作者姓名： | 张伟, 朱孔来 |
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| 作者单位： | [1]山东财经大学统计学院,山东济南250002; [2]济南大学管理学院,山东济南250002 |
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| 基金项目： | 国家社会科学基金重大项目《CPI理论重建及编制方案改进的研究》（11＆ZD015） |
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| 摘 要： | 权数是影响CPI精度的重要因素之一,通过对基本分类价格指数计算中的权数缺失和高层级价格指数计算中权数滞后的影响进行了理论和实证分析,结果表明,利用将销售量作为权数的联合比法对基本分类价格指数进行计算可以大幅提高其精度;高层级价格指数计算所用权数的滞后性同样会降低CPI的精度,且主要存在高估CPI的系统性误差问题。
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| 关 键 词： | CPI 权数 基本分类价格指数 高层级价格指数 |
Quantitative Research of the Weights Impact on the CPI |
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| Affiliation: | ZHANG Wei, ZHU Kong-lai (1. School of Statistics, Shandong University of Finance and economics, Jinan 250002, China; 2. School of Management, University of Jinan, Jinan 250002, China) |
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| Abstract: | Weight is one of the important factors that affect CPI accuracy .In this paper ,theoretical and empirical analysis of the weight loss impact on the basic classification price index and the weight lag impact on the higher-level price index are carried out .The results show that ＂combined ratio＂method-use sales as weight to calculate the basic classification price index can greatly improve its accuracy ;weight lag of CPI calculation of high level price index can also reduce the accuracy ,and main exist overestimate CPI systematic error . |
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| Keywords: | CPI CPI weights the basic classification price index the higher-level price index |
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