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To test or not to test: Preliminary assessment of normality when comparing two independent samples
BACKGROUND: Student’s two-sample t test is generally used for comparing the means of two independent samples, for example, two treatment arms. Under the null hypothesis, the t test assumes that the two samples arise from the same normally distributed population with unknown variance. Adequate contro...
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| Main Authors: | , , |
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| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
BioMed Central
2012
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| Assuntos: | |
| Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC3444333/ https://ncbi.nlm.nih.gov/pubmed/22712852 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1186/1471-2288-12-81 |
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