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Difference between revisions of "Stratified random sampling"

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(Eugen Grebenik et al., first edition 1958)
(Eugen Grebenik et al., first edition 1958)
 
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<noinclude>
 
<noinclude>
[[en-I:stratified random sampling]] [[ar-I:معاينة الطبقية العشوائية (طبقة)]] [[cs-I:stratifikovaný výběr]] [[de-I:geschichtete Stichprobe]] [[es-I:muestreo estratificado]] [[fi-I:ositettu otanta]] [[fr-I:sondage stratifié]] [[it-I:sondaggio casuale stratificato]] [[pl-I:badanie reprezentacyjne  warstwowe]] [[pt-I:AMOSTRAGEM estratificada simples]] [[ru-I:Типологическая выборка]]  
+
[[en-I:stratified random sampling]] [[ar-I:معاينة الطبقية العشوائية]] [[cs-I:stratifikovaný výběr]] [[de-I:geschichtete Stichprobe]] [[es-I:muestreo estratificado]] [[fi-I:ositettu otanta]] [[fr-I:sondage stratifié]] [[it-I:sondaggio casuale stratificato]] [[pl-I:badanie reprezentacyjne  warstwowe]] [[pt-I:AMOSTRAGEM estratificada simples]] [[ru-I:Типологическая выборка]]  
 
</noinclude>
 
</noinclude>
 
{{DEFAULTSORT:Stratified random sampling}}
 
{{DEFAULTSORT:Stratified random sampling}}

Latest revision as of 07:24, 11 February 2010

Stratified random sampling  (STRATIFIED random sampling)


In stratified random sampling1 the population is divided into a number of strata2 which are in some sense more homogeneous than the population as a whole with respect to the characteristics studied, and a simple random sample (cf. 161-4) is drawn in each stratum. Variable sampling fractions (161-5) may be used in different strata. Multi-stage sampling3 is a method where the selection of the sample is carried out in several stages. A sample of primary sampling units (160-4) is first selected and each of these units is then regarded as a population from which a sub-sample4 is selected, and the process may be repeated. Where there is no good sampling frame, a sample of areas delimited on a map may be selected: this procedure is called area sampling5.
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