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Properties of the ordinary least squares and stein-rule predictions in linear regression models with proxy variables
Authors:V K Srivastava  M Dube
Institution:1. Department of Statistics, Lucknow University, 226007, Lucknow, INDIA
2. Department of Statistics, Maharshi Dayanand University, 124001, Rohtak, INDIA
Abstract:This article considers a linear regression model in which misspecification relates to the use of a stochastic proxy variable. The analysis indicates the decline in efficiency of the predictions arising from the ordinary least squares and the Stein-rule estimation procedures when a proxy variable is used in the place of an unobservable variable. However, the performance of the Stein-rule predictions is still found to be better than the ordinary least squares predictions over a broad range of k, the characterizing scalar of the Stein-rule estimator.
Keywords:
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