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Improved estimators of population mean using two auxiliary variables in stratified random sampling
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نویسنده
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singh r. ,kumar m.
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منبع
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pakistan journal of statistics and operation research - 2012 - دوره : 8 - شماره : 1 - صفحه:65 -72
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چکیده
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An exponential family of estimators,which use the information of two auxiliary variables in the stratified sampling,is proposed to estimate the population mean of the variable under study. the mean-squared error of the suggested family of estimators are derived under large sample approximation. the family of estimators in its optimum case is carried out to show the properties of the proposed estimators.
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کلیدواژه
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Auxiliary information; Exponential estimator; Mean square error; Stratified random sampling; Study variate
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آدرس
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department of statistics, India, department of statistics, India
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Authors
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