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arXiv 0812.1625stat.MEmath.STstat.APstat.TH
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对于利用不确定先验信息的2 × 2析因数据,群体单元格均值的同时置信区间

Simultaneous confidence intervals for the population cell means, for two-by-two factorial data, that utilize uncertain prior information

Paul Kabaila, Khageswor Giri

摘要:

考虑一个2 × 2析因实验,其中有1个以上的重复。假设我们有不确定的先验信息,即两因子相互作用为零。我们描述了新的同时频率置信区间的4个人口细胞的平均值,同时置信系数1-α,利用这种先验信息在以下意义上。这些同时的置信区间定义了具有预期体积的立方体,该立方体(a)当双因子相互作用为零时相对较小,并且(b)具有不太大的最大值。此外,当数据与两因素相互作用为零的先验信息强烈矛盾时,这些区间与通过Tukey方法获得的标准同时置信区间一致,同时置信系数为1-α。我们说明了应用这些新的同时置信区间的一个真正的数据集。

英文摘要:

Consider a two-by-two factorial experiment with more than 1 replicate. Suppose that we have uncertain prior information that the two-factor interaction is zero. We describe new simultaneous frequentist confidence intervals for the 4 population cell means, with simultaneous confidence coefficient 1-alpha, that utilize this prior information in the following sense. These simultaneous confidence intervals define a cube with expected volume that (a) is relatively small when the two-factor interaction is zero and (b) has maximum value that is not too large. Also, these intervals coincide with the standard simultaneous confidence intervals obtained by Tukey's method, with simultaneous confidence coefficient 1-alpha, when the data strongly contradict the prior information that the two-factor interaction is zero. We illustrate the application of these new simultaneous confidence intervals to a real data set.

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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