variable_aleatoire.py

Created by anaali

Created on May 18, 2023

612 Bytes

# Type your text here
from math import *
def donnees(liste):
    for i in range (5):
        a=float(input("valeur:"))
        liste.append(a)
x=[]
print("saisir les valeurs de x")
donnees(x)
p=[]
print("saisir les probabilités")
donnees(p)
E,V=0,0
for i in range(5):
    E+=p[i]*x[i]
for i in range (5):
    V+=p[i]*(x[i]-E)**2
#E = sum(p[i] * x[i] for i in range(len(x)))
#V = sum(p[i] * (x[i] - E) ** 2 for i in range(len(x)))
T=sqrt(V)
print("Esperance",E)
print("Variance",V)
print("Ecart type",T)
#Esperence 0.1499999999999999
#Variance 112.02525
#Ecart type 10.584198127397276