Ratio estimators
Ratio Estimators in Simple Random Sampling Using Information on Auxiliary Attribute
... Some ratio estimators for estimating the population mean of the variable under study, which make use of information regarding the population proportion possessing certain attribute, are ...
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RATIO ESTIMATORS FOR THE CO-EFFICIENT OF VARIATION IN A FINITE POPULATION
... regression estimators. Das and Tripathi (1981) proposed a class of ratio estimators which included the classical ratio/product estimators as particular ...of ratio ...
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Ratio cum Meadian Based Modified Ratio Estimators with Known Kurtosis and Coefficient of Variation
... some ratio cum median based modified ratio estimators for estimating the finite population mean with the linear combinations of known parameters of the auxiliary variable such as kurtosis, and ...
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Ratio Cum Median Based Modified Ratio Estimators with Known Skewness, and Coefficient of Variation
... some ratio cum median based modified ratio estimators forestimating the finite population mean with the linear combinations of known parameters of the auxiliary variable such as skewness, and ...
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Review of some ratio estimators in stratified random sampling
... and ratio estimators, which are suggested in stratified random sampling, and variances of these ...and estimators developed by Kadılar-Çıngı and condition in equation (38) is ...
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Ratio Estimators in two Stage Sampling Using Auxiliary Information
... Abstract- In this paper certain ratio estimators in two-stage sampling set up with unequal first stage units, using information on two auxiliary variables x and z are considered and thei[r] ...
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Modified Ratio Estimators of Population Mean Based on Ranked Set Sampling
... generalized ratio-type estimator based on ranked set sampling (RSS) is proposed for estimating population mean using the known population parameters of auxiliary ...existing ratio estimators under ...
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A Note on Ratio Estimators in two Stage Sampling
... The ratio estimators considered in a two stage sampling set up have been compared with the usual unbiased estimator without use of auxiliary information, as regards their ...
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Mixture Ratio Estimators Using Multi Auxiliary Variables and Attributes for Two Phase Sampling
... mixture ratio estimators for estimating popula- tion mean by using information on auxiliary variables and attributes simultaneously in two-phase sampling under full, partial and no information cases and ...
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Ratio cum median based modified ratio estimators with known quartiles
... some ratio cum median based modified ratio estimators with known quartiles of the auxiliary variable have been ...of estimators is assessed with that of simple random sampling without ...
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Improved Ratio Estimators for the Population Mean Using Non-Conventional Measures of Dispersion
... The ratio estimator given in (1) is used for improving the precision of the estimate of the population mean as compared to usual sample mean estimator whenever a positive correlation exists between the study ...
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Some improved modified ratio estimators based on decile mean of an auxiliary variable
... The estimators developed so far regarding the study under consideration use the conventional measures of central tendencies, ...proposed ratio estimators are obtained and the efficiency conditions ...
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A Class of Exponential Ratio Estimators of Finite Population Mean Using Two Auxiliary Variables
... 5. Khoshnevisan, M., Singh, R., Chauhan, P., Sawan, N., and Smarandache, F. (2007). A general family of estimators for estimating population mean using known value of some population parameter(s), Far East Journal ...
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Optimal Search of Developed Class of Modified Ratio Estimators for Estimation of Population Variance
... many estimators of population variance latest being Singh and Solanki (2013), Subramani and Kumarapandiyan (2012a, b, c, 2013), tailor and Shrama (2012), and Yadav and Kadilar (2013a, b), Yadav et al (2015a, b) ...
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Comparison of Some Almost Unbiased Ratio Estimators
... of estimators developed especially for the most urged parameter - ...such estimators by exploiting the ancillary information at ...linear estimators, which are analyzed and compared in terms of ...
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Improved Estimators of Finite Population Variance using Unknown Weight of Auxiliary Variable
... of ratio estimators for estimating finite population variance has been proposed with objective to produce efficient estimators and properties have been ...
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ALMOST UNBIASED ESTIMATOR FOR ESTIMATING POPULATION MEAN USING KNOWN VALUE OF SOME POPULATION PARAMETER(S)
... in ratio method of ...modified ratio estimator by using the known value of correlation ...modified ratio estimators by using different pairs of known value of population ...
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Application of Ratio-type Estimators for Small Area in Repeated Surveys
... separate ratio-type estimation method, on current occasion (likely end of monsoon season) are ...combined ratio-type estimation method on current occasion (likely end of monsoon season) are ...combined ...
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Optimizing Forest Sampling by Using Lagrange Multipliers
... where X is the mean of a variable x in the population and x in the sample. Ratio estimators are usually bi- ased, and thus the root mean square error (RMSE) should be used instead of the standard error. The ...
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Ratio-Type Estimators in Stratified Random Sampling using Auxiliary Attribute
... the point biserial correlation coefficient between auxiliary attribute and study variable, Jhajj et al (2006) and Singh, et al (2008) defined ratio estimators of population mean when the priori information ...
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