METODE DE REDRESARE A EŞANTIOANELOR. AMELIORAREA CALITĂŢII INFORMAŢIILOR OBŢINUTE DIN SONDAJE
Journal Title: Revista Romana de Statistica - Year 2010, Vol 58, Issue 7
Abstract
Cercetările statistice prin sondaj, oricât de bine proiectate, se confruntă deseori cu faptul că structura eşantionului rezultat nu reproduce întocmai structura colectivităţii studiate. Pentru a obţine estimatori mai exacţi ai variabilelor de interes se pot folosi mai multe metode de redresare a eşantioanelor. Cele mai comune sunt: post-stratificarea, estimarea prin raport şi estimarea prin regresie. Metodele de redresare pot fi aplicate înainte sau după colectarea datelor şi oferă estimări mai bune ale parametrilor de interes.
Authors and Affiliations
Alina BARBU
Keywords
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