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Collecte de donn es par

. A - Deux approches pour construire un chantillon. Mthodes alatoires. . Mthodes non alatoires. 1.1- L'chantillonnage alatoire simple consiste choisir des individus de telle sorte que chaque membre de la population a une chance gale de figurer dans l'chantillon. Ce choix peut se fa

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Collecte de donn es par

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