| 利用试差法确定林业抽样调查中的样本容量 |
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| 引用本文： | 牛玉刚.利用试差法确定林业抽样调查中的样本容量[J].河北林果研究,1993(1). |
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| 作者姓名： | 牛玉刚 |
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| 作者单位： | 河北林学院基础部 |
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| 摘 要： | 本文针对正态总体的情形,讨论了如何利用试差法确定样本容量,即利用 n=1+s~2/(Δ (?)~2)·t~2_(n-1)(a) 式反复迭代,直到求出的n值差异很小为止,这时的n值即为所求的样本容量。文中并给出了试差法在林业中的应用实例。
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| 关 键 词： | 抽样 样本容量 试差法 |
DETERMINATION OF CAPACITY IN FORESTRY SAMPLING |
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| Niu Yugang.DETERMINATION OF CAPACITY IN FORESTRY SAMPLING[J].Hebei Journal of Forestry and Orchard Research,1993(1). |
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| Authors: | Niu Yugang |
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| Institution: | Department of Basic Courses |
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| Abstract: | Aiming at the ensemble of normal distribution, this paper discusses the method to determine the capacity of sample with the method of difference test. Examples with the method of difference test are given. Finally, the method to determine the capacity of two samples in the homogeneity test of averges is also discussed. |
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| Keywords: | sampling capacity of sample method of difference test |
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