fre
TQMP
Tutorials in Quantitative Methods for Psychology
1913-4126
2012-10-03
8
3
173
181
10.20982/tqmp.08.3.p173
article
La représentativité d’un échantillon et son test par le Khi-deux; Testing the representativeness of a sample
Laurencelle, Louis
Louis_Laurencelle@UQTR.CA
1
Université du Québec à Trois-Rivières
The value and credibility of a survey or opinion pool depend to a large extent on the observed sample’s representativeness, which in turndepends on sample size. When dealing with an heterogenous population, however, sample size may be insufficient to counterbalance possible biases due to differences in constituent subpopulations. If population’s composition is known, the sample’s representativeness can be verified by a Chi-square test: the test is illustrated and a special formula is proposed and validated for the case of finite populations.
https://www.tqmp.org/RegularArticles/vol08-3/p173/p173.pdf
statistical tests
khi-square test