File:Null hypothesis testing.png
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![File:Null hypothesis testing.png](https://upload.wikimedia.org/wikipedia/commons/thumb/d/d8/Null_hypothesis_testing.png/799px-Null_hypothesis_testing.png?20230813212710)
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[edit]DescriptionNull hypothesis testing.png |
Français : La valeur p (aire rayée en orange) est calculée selon la distribution (ici représentée par une densité de probabilité) induite par l’hypothèse nulle supposée, H0. La décision de rejet est basée sur sa magnitude vis-à-vis d’un risque pré-établi (aire rouge) – ici dans un contexte de test unilatéral de supériorité – ce qui revient à fixer une valeur seuil de la quantité mesurée (X). La puissance (aire rayée en gris), ou sensibilité dans le cas d’un test diagnostique, dépend à la fois du seuil et de la distribution (a priori inconnue) induite par l’hypothèse alternative. |
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Author | MTSofonea |
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current | 21:27, 13 August 2023 | ![]() | 3,708 × 1,202 (247 KB) | MTSofonea (talk | contribs) | Uploaded own work with UploadWizard |
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