| 总体均值估计量最小方差的改进 |
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| 引用本文： | 李琳,刘涛.总体均值估计量最小方差的改进[J].沈阳航空工业学院学报,2005,22(4):88-90. |
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| 作者姓名： | 李琳 刘涛 |
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| 作者单位： | 1. 沈阳航空工业学院理学系,辽宁,沈阳,110034
2. 东北大学材冶学院,辽宁,沈阳,110004 |
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| 摘 要： | 在简单随机抽样中,样本均值是总体均值的无偏估计.其他复杂的抽样方法常以简单随机抽样为基础,对于相同的样本容量条件下不同的抽样方法来说,总体均值估计量的方差就成为衡量各种抽样方法的有效程度的重要标志.对文1]中给出的求有限总体均值估计量最小方差的几种方法进行了讨论,并对其求解方法进行了改进.
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| 关 键 词： | 总体 均值 估计量 方差 |
| 文章编号： | 1007-1385(2005)04-0088-03 |
| 修稿时间： | 2005年7月12日 |
Improving methods to calculate estimator minimum variance of the finite population mean |
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| LI Lin,LIU Tao.Improving methods to calculate estimator minimum variance of the finite population mean[J].Journal of Shenyang Institute of Aeronautical Engineering,2005,22(4):88-90. |
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| Authors: | LI Lin LIU Tao |
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| Institution: | LI Lin~1 LIU Tao~2 |
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| Abstract: | In a simple random sampling, the sample mean is an unbiased estimate of the population mean. Other complex sampling methods often based on the results of a simple random sampling. For different sampling methods with the same sample size, the estimator variance of the population mean becomes an important sign to measure the accuracy of any sampling methods. This article discusses some methods to calculate the estimator minimum variance of the finite population mean which had been given in1]. It also makes some improvement for the calculation methods. |
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| Keywords: | population mean estimator variance |
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