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Estimation of regression models with equi-correlated responses when some observations on the response variable are missing
Authors:H Toutenburg  Shalabh
Institution:1.Institut für Statistik,Universit?t München,München,Germany;2.Department of Statistics,Panjab University,Chandigarh,India
Abstract:The present article deals with the problem of estimation of parameters in a linear regression model when some data on response variable is missing and the responses are equi-correlated. The ordinary least squares and optimal homogeneous predictors are employed to find the imputed values of missing observations. Their efficiency properties are analyzed using the small disturbances asymptotic theory. The estimation of regression coefficients using these imputed values is also considered and a comparison of estimators is presented.
Keywords:linear regression  missing data  equi-correlated response  comparison of estimators  optimal homogeneous predictors
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