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Successive Sampling with Varying Probabilities and Optimal Use of Ancillary Variates

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Title Successive Sampling with Varying Probabilities and Optimal Use of Ancillary Variates
 
Creator Prem Prakash
 
Subject Auxillary Variate
Rotation Sampling
 
Description Not Available
In the present study, successive sampling with unequal probabilities has been considered in the first three chapters. And in the last the technique of combining the information on ancillary characters has also been studied.
In the successive sampling three cases have been considered i.e. (i) when the units at the first occasion some units are retained with probability proportional to the sizes of the units a observed on the previous occasion. The result are compares with regression estimate which shows that the regression estimate is better as compare to the estimate based on probability proportional selection. When 5 the number of units in the population is large which is evidently shown by Desh Raj (1958) in the Uniphase sampling. But if N and np the no. of units retained are small the estimate based on probability proportional is more efficient as compared to the estimate based on regression estimate.
In the 2nd case when information on auxiliary variate is given on the 1st occasion the units are selected with probability proportional to the sizes of the auxiliary variate and at the 2nd occasion sub sample is selected by the method of simple random sampling. Whereas in the 3rd case at both the occasions units are selected with probability proportional to the sizes determined by the auxiliary variable.
In the last when more than one auxiliary characters correlated with the variate under consideration are given, the techniques of ratio, regression unequal probability stratification are combined to produce more efficient estimates and they are compared with the usual methods.
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Date 2018-07-27T06:30:08Z
2018-07-27T06:30:08Z
1966-01-01
 
Type Dissertation/Thesis
 
Identifier Prem Prakash (1966) ,Successive Sampling with Varying Probabilities and Optimal Use of Ancillary Variates, Unpublished Diploma in Agricultural and Animal Husbandry Statistics, IASRI, New Delhi
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/6327
 
Language English
 
Relation Not Available;
 
Publisher ICAR-IASRI (Erstwhile IARS), New Delhi