摘要：Bayesian estimation methods for several binomial probabilities are studied by using a mixture of a product of beta prior distributions. Approximations to the posterior means and credible regions are derived. The result obtained are applied to a sample survey problem in which there is significant nonresponse.
关键词：Categorical data ; Mifture of distributions;Similarity; Sample surveys; Nonresponse error; Contingency tables Estimations.
