December 2020 0 124 Report
Bonjour pouvez vous m'aider s'il vous plaît.. Lors d’un contrôle de vitesse sur une route nationale (limitées à 90 km/h), on a relevé les résultats suivants :

Vitesses

(km/h) Effectifs

(nombre de véhicules) Fréquence Effectif cumulé Fréquence cumulée

[70-80[ 28

[80-90[ 95

[90-100[ 77

[100-110[ 38

[110-120[ 12


1. Compléter le tableau suivant
2. Le caractère étudié est-il qualitatif, quantitatif discret ou continu ?
3. Quel est l’effectif total ?
4. Déterminer le nombre de véhicules et le % de véhicules dont la vitesse
a. est inférieure à 90 km/h
b. est inférieure à 100 km/h
c. est supérieure à 100 km/h
d. comprise entre 80 et 100 km/h
5. Tirer une conclusion de ces données.
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