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La distribution des scores Z possède toujours les propriétés suivantes Moyenne de _Écart type de _Ce qui facilite la comparaison entre le s_____ b_____ d'une personne à un test à un échantillon de personnes dit g______ de r_____Désavantages des scores Z :Présence de s_____ n______ (pour tous les scores situés sous la moyenne)Nécessite d'utiliser des d_______ (parce que l'étendue est faible)Pour pallier ces inconvénients : on peut m______ le score Z par ____ et on y additionne un nombre arbitraire

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