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Etant donnée une grandeur mesurable m, assimilée à une variable aléatoire de densité de probabilité continue P(m) définie sur le domaine D (a) écrire la condition de normalisation ;(b) exprimer la valeur moyenne m de la grandeur mesurable m ;(c) exprimer la variance V (m) de la grandeur mesurable m (deux expressions possibles) ;(d) exprimer l'écart-type σ(m).
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