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(9) Tapez sur y pour tracer le graphique en ligne xy.
7-5-2
Représentation graphique de données statistiques à deux variables
Représentation graphique d’une régression
Procédez de la façon suivante pour saisir des données statistiques à deux variables.
Effectuez ensuite une régression à partir de ces données et représentez graphiquement les
résultats. Vous pouvez afficher le graphique sans avoir à calculer la régression.
Exemple 1 : Saisir les données à deux variables suivantes et les afficher sur un diagramme
à nuages de points. Effectuer ensuite une régression logarithmique à partir de
ces données pour afficher les paramètres de la régression et représenter celle-
ci graphiquement.
list1 = 0.5, 1.2, 2.4, 4.0, 5.2
list2 = –2.1, 0.3, 1.5, 2.0, 2.4
u Opérations sur le ClassPad
(1) m I
(2) Saisissez les données ci-dessus.
(3) Tapez sur [SetGraph] puis sur [Setting…] ou tapez sur y.
(4) Dans la boîte de dialogue de configuration des graphiques statistiques qui apparaît,
paramétrez une configuration StatGraph en utilisant les réglages suivants et tapez sur
[Set].
Draw : On
Type : Scatter
XList : list1
YList : list2
(5) Tapez sur y pour marquer les points.
Nuage de points Ligne xy
337

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