Title Details: | |
Ratio and regression estimators |
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Authors: |
Papageorgiou, Ioulia |
Reviewer: |
Karakostas, Konstantinos |
Description: | |
Abstract: |
Ratio and regression estimators of a population parameter are characterized primarily by their reliance on an auxiliary variable. In both estimation approaches, the idea is to use available data on one or more variables that are related to the main study variable, with the goal of improving the estimation of population parameters for the primary variable. The ratio estimator is defined using the ratio of the means or totals of two characteristics, while the regression estimator is based on fitting a linear regression model, where the independent variable is the main study variable and the dependent variable(s) are the auxiliary variable(s). The ratio estimator yields more accurate results when the correlation coefficient between the main and the auxiliary variable is high. The regression estimator is always more efficient than an estimator that does not make use of auxiliary information, and its efficiency increases as the correlation between the variables becomes stronger.
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Technical Editors: |
Mourikis, Christos |
Type: |
Chapter |
Creation Date: | 2015 |
Item Details: | |
License: |
http://creativecommons.org/licenses/by-nc-sa/3.0/gr |
Handle | http://hdl.handle.net/11419/1301 |
Bibliographic Reference: | Papageorgiou, I. (2015). Ratio and regression estimators [Chapter]. In Papageorgiou, I. 2015. Sampling Theory [Undergraduate textbook]. Kallipos, Open Academic Editions. https://hdl.handle.net/11419/1301 |
Language: |
Greek |
Is Part of: |
Sampling Theory |
Publication Origin: |
Kallipos, Open Academic Editions |