期刊
STATISTICAL PAPERS
卷 49, 期 2, 页码 237-247出版社
SPRINGER
DOI: 10.1007/s00362-006-0009-4
关键词
missing data; ratio method; imputation; amputation
In this article, we consider the estimation of a population mean when some observations on the study characteristic are missing in the bivariate sample data. In all, five estimators are presented and their efficiency properties are discussed. One estimator arises from the the amputation of incomplete observations while the remaining four estimators are formulated using imputed values obtained by the ratio method of estimation.
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