Jun 8, 2020 22:04
3 yrs ago
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English term
based on nominal P value
English to Polish
Science
Mathematics & Statistics
clinical trial report: e.g. P < .001 vs placebo based on nominal P value
Czy chodzi o "w oparciu o nominalną wartość P", czy raczej o "wartość P wyznaczoną dla zmiennych w skali nominalnej"
Czy chodzi o "w oparciu o nominalną wartość P", czy raczej o "wartość P wyznaczoną dla zmiennych w skali nominalnej"
Discussion
https://www.amgen.pl/~/media/amgen/full/www-amgen-com/www-am...
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What is a Nominal p-value?
Aliases: nominal significance
The nominal p-value is a calculated observed significance based on a given statistical model. When the statistical model reflects the actual test performed the nominal and actual p-value coincide. When the model is inadequate the nominal and actual significance can differ by varying amounts and oftentimes it is not possible to calculate the actual difference.
The nominal p-value may become a meaningless number if the assumptions of the statistical model used to compute it does not hold. These vary from simple things such as performing the calculation with a predefined (fixed) sample size (no peeking) to more complex ones such as requirements about normal distribution of the error, independence and identical distribution of observations, lack of multiple comparisons / multiple testing, and so on. Violating any of the prerequisites of a significance test will render the nominal p-value more or