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Multivariate Fay-Herriot models for small area estimation with application to household consumption per capita expenditure in Indonesia

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Multivariate Fay-Herriot (MFH) models become popular methods to produce reliable parameter estimates of some related multiple characteristics of interest that are commonly produced from many surveys. This article studies the application of MFH models for estimating household consumption per capita expenditure (HCPE) on food and HCPE of non-food. Both of those associated direct estimates, which are obtained from the National Socioeconomic Surveys conducted regularly by Statistics Indonesia, have a strong correlation. The effects of correlation in MFH models are evaluated by employing a simulation study. The simulation showed that the strength of correlation between variables of interest, instead of the number of domains, plays a prominent role in MFH models. The application showed that MFH models have more efficient than univariate models in terms of standard errors of regression parameter estimates. The roots of mean squared errors (RMSEs) of the estimates obtained from the empirical best linear unbiased prediction (EBLUP) estimators of MFH models are smaller than RMSEs obtained from the direct estimators. Based on MFH model, the HCPE estimates of food by districts in Central Java, Indonesia, are higher than the HCPE estimates of non-food. The average of HCPE estimates of food and non-food in Central Java, Indonesia in 2015 are IDR 383,100.6 and IDR 280,653.6, respectively.
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Keywords: Correlation; EBLUP; household consumption per capita expenditure; multivariate Fay-Herriot models; small area estimation

Document Type: Research Article

Affiliations: 1: STIS Polytechnic of Statistics, Jakarta, Indonesia 2: Departement of Statistics, Faculty of Mathematics and Natural Sciences, Bogor Agricultural University, Bogor, Indonesia 3: Departement of Mathematics, Faculty of Mathematics and Natural Sciences, Bogor Agricultural University, Bogor, Indonesia

Publication date: November 18, 2019

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