Révisions bac - Espérance et variance d'une somme de variables aléatoires - Terminale spé maths
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YouTubeπ Maths
Révisions bac - Espérance et variance d'une somme de variables aléatoires - Terminale spé maths
Question quasi-certaine au Bac : calculer l'espérance et la variance d'une somme de variables aléatoires. Tu vas voir comment calculer E(Y) et V(Y) quand Y = X1 + X2, avec X1 et X2 indépendantes et de même loi. Le réflexe à installer : la linéarité de l'espérance est toujours valable, peu importe les variables. Mais pour la variance, V ...
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