Moyenne et fréquences 4

On étudie le salaire des cadres d'une entreprise. On a obtenu les résultats suivants:
le salaire Effectif Fréquence
[ 1615 ; 1931 [ 2
[ 1931 ; 2508 [ 10
[ 2508 ; 2510 [ 1
[ 2510 ; 2597 [ 5
[ 2597 ; 3222 [ 1
[ 3222 ; 3454 [ 1
[ 3454 ; 4500 [ 3

Remplir le tableau des fréquences (valeurs décimales arrondies au centième) et calculer la moyenne de cette série :

Moyenne =


This is exercise number 1 in a series of 9 exercises.
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  • 9

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