Moyenne : 

Ecart type

Intervalles autour de la moyenne     

Modifier ici la  valeur de la moyenne
 et la valeur de l'écart-type de votre
 série statistique.

Pourcentage correspondant
 à  cet intervalle : 
  
  
  

Courbe de distribution normale

f(x) =  \frac{ 1 }{ \sqrt{ (2 π σ²) }  } \  \   ℯ^ \frac{  -(x - μ)²  }{ 2 σ²}  

μ = 17.5 (slider from 0 to 50, step 0.1)
σ = 4.4 (slider from 1 to 5, step 0.01)
f(x) = 100.0 / (2.0 * 3.14 * σ^(2.0))^(0.5) * exp(-(x - μ)^(2.0) / (2.0 * σ^(2.0)))
b = 2 (slider from 0 to 5, step 0.01)
g = Integral(f, μ - b * σ, μ + b * σ)
T5: "[  μ-  " + b + "σ ;  μ +" + b + "σ  ["
T6: "[  " + (μ - b * σ) + " ;  " + (μ + b * σ) + "["
T8: "" + g + "%"
r = Integral(f, μ - b * σ, μ + b * σ)
A: (μ - σ * b, 0.0)
B: (μ + σ * b, 0.0)
C = Midpoint(A, B)
u = Vector(C, B)
v = Vector(C, A)
a = Line(C, yAxis)
D = Intersect(f, a, (17.5, 9.069169141677524))
c = Segment(D, C)
E = (32.57050109869543, 0.27514275113055603)
F = (50.01888058826654, 0.27456307074884273)
G = (50, 0.05)
H = (32.74440521320943, 0.050226763025785715)
I = (35, 24)
J = (52.16369800060585, 24.036192822775664)
K = (52, 1)
L = (35, 1)
poly1, i, j, k, l = Polygon(I, J, K, L)