2 resultados para graphical authentication
em Collection Of Biostatistics Research Archive
Filtro por publicador
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- University of Michigan (22)
- University of Queensland eSpace - Australia (11)
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- WestminsterResearch - UK (5)
Relevância:
Resumo:
It is possible for a pair of dichotomous, categorical variables to have an overall positive association (say) in a stratified population, and at the same time be negatively associated in every stratum. This (essentially) is Simpson's paradox. A graphical device, the risk diagram, provides insight into Simpson's paradox and related concepts.
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