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QCM


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Posted

Salut je ne comprends un qcm c'est le qcm8 item e page 17 du poly. Je ne sais pas si il faut vraiment arrondir ou si je me suis trompé dans les calculs.

Moi je trouve 2,8 et pas 2,4

Mercii

Posted
il y a 5 minutes, emeline01 a dit :

Salut, 

Voici le calcul pour trouver la moyenne : ((1×4)+(2×3)+(3×0)+(4×1)+(5×2))/(4+3+1+2) = (4+6+0+4+10)/1024/10 = 2,4. L'item E est donc bien vrai

 

Bon courage !

Ah d'accord faut diviser par l'effectif total, il faut tout additionner.

Merciii 

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