SAMPLE-SIZE DETERMINATION FOR CONFIDENCE-INTERVALS ON THE POPULATION MEAN AND ON THE DIFFERENCE BETWEEN 2 POPULATION MEANS
SAMPLE-SIZE DETERMINATION FOR CONFIDENCE-INTERVALS ON THE POPULATION MEAN AND ON THE DIFFERENCE BETWEEN 2 POPULATION MEANS
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DOI：
10.2307/2531696
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发表时间：
1989-09-01
期刊：
影响因子：
1.9
通讯作者：
BEAL, SL
中科院分区：
文献类型：
--
作者：
BEAL, SL
样本大小的确定通常基于假设检验的前提。置信区间有时比假设检验更有效。本文提出了一种确定样本量的方法，该方法的前提是使用正态分布数据的简单均值或两均值之差的置信区间。为此，给出了与置信区间相关的幂的概念。给出了一些有用的表格，给出了使用这种方法所需的样本量。
Sample size determination is usually based on the premise that a hypothesis test is to be used. A confidence interval can sometimes serve better than a hypothesis test. In this paper a method is presented for sample size determination based on the premise that a confidence interval for a simple mean, or for the difference between two means, with normally distributed data is to be used. For this purpose, a concept of power relevant to confidence intervals is given. Some useful tables giving required sample size using this method are also presented.