Pratique des Biostatistiques
Accueil › Statistiques descriptives › Statistiques descriptives à deux dimensions
 Dernière modification: 27 juin 2011

Diagramme de dispersion

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Les statistiques à deux dimensions s'appliquent non plus aux valeurs de X et Y considérées de manière individuelle, mais bien aux couples (X;Y), qui représentent les deux mesures qui ont été réalisées sur un même individu.

Dans notre exemple, pour chaque chauve-souris, un couple (envergure; poids) a été mesuré.

L'ensemble de ces points est reporté sur un graphique à deux dimensions, type "nuage de points" ou diagramme de dispersion.