Population Mean
An improved ratio estimator of population mean at current occasion
... However, in many practical situations it is more favourable to use the ratio estimator not only on the grounds of efficiency but also Another advantage of using ratio estimator over regression estimator is that the ...
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An Efficient Estimation Procedure for the Population Mean under Non-Response
... the population mean in the presence of ...of population mean provides an improvement over the corresponding conventional estimators proposed by Cochran (1977), Rao (1983, 1986) and Singh and ...
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Improved Ratio-Cum-Product Estimators of Population Mean Using Known Population Parameters of Auxiliary Variables
... finite population U = ( U U 1 , 2 ...the population U to estimate the population mean ( Y ) of study character y , when the population ...
7
ALMOST UNBIASED ESTIMATOR FOR ESTIMATING POPULATION MEAN USING KNOWN VALUE OF SOME POPULATION PARAMETER(S)
... certain population parameter(s) to find more precise ...estimating population mean of a study character in ratio method of ...the population variance of study character y was first made by ...
14
An Efficient Class of Estimators for the Finite Population Mean in Ranked Set Sampling
... In this paper, we suggest a class of estimators for the population mean, using known population mean of the auxiliary variable in RSS. It is shown that the proposed class of estimators ...
10
Improved Modified Ratio Estimator for Estimating Population Mean in Double Sampling Using Information on Auxiliary Attribute
... of population mean using information on auxiliary attribute, we have improved estimation of population mean in double sampling in ratio ...and Mean Square Error of the proposed modified ...
8
A New Product Type Estimator of Population Mean and Its Efficiency
... sample mean based on large preliminary sample of size n drawn with SRSWOR from the population of size N, corresponding to ith auxiliary ...When population mean of auxiliary variable X is not ...
6
Estimation of the Population Mean Using Paired Ranked Set Sampling
... Now the RSS (D) and RSS (E) procedures were used to get the values of the estimators for population mean. Based on 10,000 simulated samples estimates of means and varainces or mean squared error ...
7
Adjustment of the Auxiliary Variable(s) for Estimation of a Finite Population Mean
... We propose a new weighted estimator, whose weights do not necessarily sum up to one. The target has been to improve the efficiency of estimation of the population mean, in model based approach. Here we ...
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Modified Ratio Estimators of Population Mean Based on Ranked Set Sampling
... estimating population mean using the known population parameters of auxiliary ...The mean square error (MSE) of the proposed estimator is derived and compared with some existing ratio ...
5
An alternative procedure for estimating the population mean in simple random sampling
... finite population mean using auxiliary information in simple random ...the mean squared error of the estimator proposed by Gupta and Shabbir ...
20
Use of Non-Conventional Measures of Dispersion for Improved Estimation of Population Mean
... of population mean and have given the conditions under which the proposed estimator performs better than the other estimators of population mean under simple random sampling without ...
7
ESTIMATION OF FINITE POPULATION MEAN USING RANDOM NON–RESPONSE IN SURVEY SAMPLING
... We are considering the situation when information on the study variable y could not be obtained for r units while information on the auxiliary variable x is available and the population mean X of the ...
21
Improved Ratio Estimators for the Population Mean Using Non-Conventional Measures of Dispersion
... estimate population mean ̅ ∑ on the basis of a random ...the population parameters of the auxiliary variable, such as population mean, kurtosis, skewness, coefficient of variation, ...
15
Improved Exponential Type Estimators for Finite Population Mean in Stratified Random Sampling
... 8. Yadav R., Upadhyaya L.N., Singh H.P., Chatterjee S. Improved ratio and product exponential type estimators for finite population mean in stratified random sampling, Communications in Statistics: Theory ...
13
A GENERALIZED CLASS OF PREDICTIVE ESTIMATORS OF FINITE POPULATION MEAN IN SAMPLE SURVEYS
... n large scale sample surveys it is a usual practice to search for auxiliary information to help improving the efficiency of estimates based on only study variable. The use of auxiliary information in sample surveys dates ...
12
An Improved Estimator of Population Mean using Information on Median of the Study Variable
... where population mean of the study variable is not known but the population median of the main variable under study is ...of population mean of study ...of population mean ...
7
Exponential Ratio Type Estimators of Population Mean under Non Response
... of population of size N ...unknown population mean Y of study variable y when the population mean X of auxiliary variable x is assumed to be ...
14
Model-Assisted Estimation of Population Mean in Two-Stage Cluster Sampling
... The population mean to be estimated is given by equation ...the population are ...the population together with the model defined in equation ...
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A CLASS OF ESTIMATORS FOR PREDICTIVE ESTIMATION OF POPULATION MEAN IN TWO-PHASE SAMPLING
... We have made a successful attempt in constructing a class of estimators for the finite population mean that is decidedly better than some other classes gathering information on two auxiliary variables in a ...
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