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L'option D) est incorrecte parce que le menu "Descriptives" dans Jamovi est précisément l'endroit où l'on peut calculer les moyennes des variables. Quitter ce menu ne ferait que vous éloigner de la fonctionnalité requise pour accomplir la tâche. Jamovi est conçu pour fournir des statistiques descriptives, y compris les moyennes, directement dans ce menu pour n'importe quelle variable quantitative sélectionnée. Ainsi, il n'y a aucune raison de quitter ce menu si l'objectif est de calculer les moyennes pour "Cours1" et "Cours2". La bonne procédure est de rester dans le menu "Descriptives" et de placer les variables d'intérêt dans la zone "Variables" pour obtenir leurs statistiques descriptives.

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