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Title Details:
Stratified random Sampling (SrS)
Authors: Farmakis, Nikolaos
Reviewer: Batsidis, Apostolos
Subject: MATHEMATICS AND COMPUTER SCIENCE > MATHEMATICS > STATISTICS
Keywords:
Sampling
Simple Random Sampling
Population
Sample
Random Variable
Mean Value
Variance
Standard Deviation
Stratified Sampling
Proportional Stratified Sampling
Optimal Allocation
Arithmetic Estimator Of Mean
Geometric Estimator Of Mean
Description:
Abstract:
In the 3rd chapter we deal with the Stratified random sampling (SrS) the most often used sampling technique for surveys. Definitions of basic concepts and the suitable notations are given. We deal with the two kinds of sampling and the suitable estimators: Proportional and optimal allocation. A short part of this chapter is for binary variables, the percentages and their estimations especially in surveys. Also the problem of the size of whole sample and its parts from the population parts (strata) is studied.
Illustrative Examples are given and in some case the problem of optimal allocation is studied. The optimality criteria have to do with a) The cost of the survey and b) the variance of the mean value of the estimators. Some exercises are proposed for solution.
Table of Contents:
3.1 Defining ideas - Notations
3.2 Estimations- The two basic estimators of the mean
3.3 Optimal allocation
3.4 Estimating percentagew
Bibliography/ references
Solved Examples
Type: Chapter
Creation Date: 2015
Item Details:
License: http://creativecommons.org/licenses/by-nc-nd/3.0/gr
Handle http://hdl.handle.net/11419/4843
Bibliographic Reference: Farmakis, N. (2015). Stratified random Sampling (SrS) [Chapter]. In Farmakis, N. 2015. Δειγματοληψία και εφαρμογές [Undergraduate textbook]. Kallipos, Open Academic Editions. chapter 3. http://hdl.handle.net/11419/4843
Language: Greek
Is Part of: Δειγματοληψία και εφαρμογές
Publication Origin: Kallipos, Open Academic Editions