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On the Bayesian estimation for Cronbach's alpha

机译:关于Cronbachα的贝叶斯估计

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This article considers the problem of estimating Cronbach's alpha under a Bayeisan framework. Such Bayes estimator arrives through out approximating distribution of the maximum likelihood estimator for Cronbach's alpha by an F distribution. Then, employing a noninformative prior distribution, Bayes estimator under squared-error and LINEX loss functions have been evaluated. Simulation studies suggest that the Bayes estimator under LINEX loss function reduce biasness of the ordinary maximum likelihood estimator. Moreover, The LINEX Bayes estimator does not sensitive with respect to choice of hyperparameters of prior distribution. R codes for readers to calculate Bayesian Cronbach's alpha have been given.
机译:本文考虑在Bayeisan框架下估计Cronbach的alpha值的问题。这种贝叶斯估计量是通过F分布近似得出Cronbach's alpha的最大似然估计量的分布。然后,采用非信息先验分布,对平方误差下的贝叶斯估计量和LINEX损失函数进行了评估。仿真研究表明,LINEX损失函数下的贝叶斯估计器降低了普通最大似然估计器的偏差。此外,LINEX贝叶斯估计器对先验分布的超参数的选择不敏感。已经给出了供读者用来计算贝叶斯Cronbachα的R代码。

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