POPULATION VARIANCE ESTIMATION USING FACTOR TYPE IMPUTATION METHOD
نویسندگان
چکیده
منابع مشابه
Variance Estimation in the Presence of Imputation for Missing Data
Item nonresponse is usually treated by some form of deterministic or random imputation. We focus on deterministic imputation; in particular, ratio and nearest neighbour imputations commonly used in establishment surveys. Frequentist inference from imputed data is based on a repeated sampling framework and assumed response mechanism. On the other hand, use of imputation models requires only that...
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Statistical imputation of classical HLA alleles in case-control studies has become established as a valuable tool for identifying and fine-mapping signals of disease association in the MHC. Imputation into diverse populations has, however, remained challenging, mainly because of the additional haplotypic heterogeneity introduced by combining reference panels of different sources. We present an ...
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Appropriate imputation inference requires both an unbiased imputation estimator and an unbiased variance estimator. The commonly used variance estimator, proposed by Rubin, can be biased when the imputation and analysis models are misspecified and/or incompatible. Robins and Wang proposed an alternative approach, which allows for such misspecification and incompatibility, but it is considerably...
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In this paper we have proposed some ratio-type estimators of finite population variance using known values of parameters related to an auxiliary variable such as quartiles with their properties in simple random sampling. The suggested estimators have been compared with the usual unbiased and ratio estimators and the estimators due to [2], [12, 13, 14] and [3]. An empirical study is also carried...
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Imputation is one of the most common methods to reduce item non_response effects. Imputation results in a complete data set, and then it is possible to use naϊve estimators. After using most of common imputation methods, mean and total (imputation estimators) are still unbiased. However their variances (imputation variances) are underestimated by naϊve variance estimators. Sampling mechanism an...
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ژورنال
عنوان ژورنال: Statistics in Transition. New Series
سال: 2017
ISSN: 1234-7655,2450-0291
DOI: 10.21307/stattrans-2016-076