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Almost unbiased ratio type estimators of population mean using two auxiliary attributes in systematic sampling
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نویسنده
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khan z. ,shabbir j. ,hussain z.
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منبع
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proceedings of the pakistan academy of sciences - 2011 - دوره : 48 - شماره : 3 - صفحه:173 -178
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چکیده
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In this paper,we propose a class of almost unbiased ratio-type estimators for estimating the finite population means using systematic sampling when information on two auxiliary attributes is available. the proposed class of estimators is always more efficient than the usual mean estimator,i.e.,niak and gupta (1996) estimator and sahai and ray (1980) estimator. two real data sets are used for numerical comparison. © pakistan academy of sciences.
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کلیدواژه
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Attributes; Bias; Efficiency; Mean square error (mse)
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آدرس
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department of mathematics and statistics,federal urdu university of arts,science and technology, Pakistan, department of statistics,quaid-i-azam university, Pakistan, department of statistics,quaid-i-azam university, Pakistan
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Authors
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