Simple random sample
Results: 337
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21 | PIRLS 2001 Technical Report, Chapter 5Add to Reading ListSource URL: timssandpirls.bc.eduLanguage: English - Date: 2003-04-09 04:19:54 |
22 | Web panel surveys – can they be designed and used in a scientifically sound way? Jörgen Svensson Statistics Sweden, Örebro, SWEDEN e-mail: AbstractAdd to Reading ListSource URL: www.statistics.gov.hkLanguage: English - Date: 2013-08-22 04:39:20 |
23 |